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Yamaha A-S501

Stereo integrated amplifier with built-in DAC (Black)

Item # 022AS501B

Powering your speakers is about more than just brute force.

Powering your speakers is about more than just brute force.

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Item # 022AS501B

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About the Yamaha A-S501

Power and finesse

Powering your speakers is about more than just brute force. The Yamaha A-S501 offers an excellent balance of power and agility, so your music sounds dynamic and bold without sounding bloated or distorted. In addition to its ample power output, this integrated amplifier employs a symmetrical circuit layout from inputs to outputs, along with an anti-resonance chassis. This keeps distortion and interference from cluttering the signal, for sound that's clean and clear. Your stereo speakers will come to life, for an engaging, detailed performance. Engage Pure Direct listening mode to bypass tone and loudness controls, for an even purer signal.

Power and finesse

Powering your speakers is about more than just brute force. The Yamaha A-S501 offers an excellent balance of power and agility, so your music sounds dynamic and bold without sounding bloated or distorted. In addition to its ample power output, this integrated amplifier employs a symmetrical circuit layout from inputs to outputs, along with an anti-resonance chassis. This keeps distortion and interference from cluttering the signal, for sound that's clean and clear. Your stereo speakers will come to life, for an engaging, detailed performance. Engage Pure Direct listening mode to bypass tone and loudness controls, for an even purer signal.

Connect your TV and Blu-ray player

The A-S501 has six pairs of analog RCA inputs, including a phono input for connecting a turntable. But music sources aren't the only possibilities: optical and coaxial digital audio inputs let you bring video devices into the fold. Connect a TV or Blu-ray player to these inputs, and enjoy movie sound through your stereo speakers with this amp. It's a cost-effective way to build an excellent two-channel rig in your TV room that offers dynamic sound with a wide stereo image.

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Product highlights:

  • 85 watts x 2 channels into 8 ohms (20-20,000 Hz) at 0.019% THD
  • 4-ohm capability allows use with a wide range of speakers
  • ToP-ART (Total Purity Audio Reproduction Technology) combines a symmetrical circuit layout along with anti-resonance construction for high-quality sound with minimal distortion
  • Pure Direct mode allows music signals to travel the shortest possible route through the unit's circuitry for cleaner sound
  • optical and coaxial digital audio inputs
  • 6 RCA audio inputs, including MM (moving magnet) phono input
  • Bluetooth®-ready with optional Yamaha YBA-11 adapter (not included)
  • subwoofer output
  • two pairs of RCA recording outputs
  • signal-to-noise ratio: 99 dB (CD)
  • two pairs of gold-plated binding-post speaker connectors with front-panel switching
  • 1/4" headphone jack
  • remote control
  • 17-1/8"W x 6"H x 15-1/4"D
  • weight: 22.7 lbs.
  • warranty: 2 years
  • Our 60-day money-back guarantee
  • MFR # A-S501BL
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What's in the box:

  • Stereo integrated amplifier
  • Remote control (RAS13)
  • 2 "AA" batteries
  • Owner's manual (En/ Fr)
  • Warranty information (US/CA)
  • On-line product registration information
  • "Yamaha Worldwide Representative Offices" note

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Yamaha A-S501 reviews

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Yamaha A-S501

Crutchfield customer from Cadiz, KY on 3/29/2019

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I called Crutchfield to get a recommendation for replacing an old stereo receiver. Dee was very helpful and recommended the Yamaha A-S501. It was easy to hookup and gives me great sound. Highly recommend.

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Yamaha A-S501

Bill from Tucson, AZ on 3/20/2019

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Just received my Yamaha S501 integrated amplifier from Crutchfield ; what a great sound. Works really well with my Elac Unfi UB 5's and my Rega P3 turntable. This is a sound I'm accustomed to with Yamaha, They build great very low THD without breaking the bank. Great service from the Crutchfield people I chatted with; they helped me make a decision.

Pros: Great sound.

Cons: None

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0 of 0 found this helpful

Yamaha A-S501

ferdinand from Glendale, CA on 2/24/2019

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Great BUY !!! NO regrets, ALL Praises on my A-S501 ??

Pros: ALL

Cons: NONE

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0 of 0 found this helpful

Yamaha A-S501

Ed from The Villages, FL on 2/12/2019

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I love this amp, it replaces an old Harmon which was THE standard in its day. All the sounds are so natural, from low background music to neighbor hood parties. With the JBL towers, look out sound is a coming.

Pros:

Cons: Absolutely none

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1 of 1 found this helpful

Yamaha A-S501

Antonio from Barrigada, GU on 1/2/2019

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Very good value for the price. This is a high current device that does its job very well!

Pros: great performance clean simple design.

Cons: Needs a break in for best performance.

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1 of 1 found this helpful

Yamaha A-S501

dave from Rumford, ME on 12/30/2018

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very nice amp spent a lot of years with a few different recievers and wanted to go old school... this amp hits the mark perfectly the matching tuner might be my next purchase

Pros: back to old school

Cons: havnt found any

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1 of 2 found this helpful

Yamaha A-S501

Crutchfield customer from West Chester, PA on 12/17/2018

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Beautiful sound. Plenty of power. Great amp for the money.

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0 of 0 found this helpful

Yamaha A-S501

Crutchfield customer from Lancaster, NY on 11/25/2018

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A great value

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0 of 1 found this helpful

Good natural detailed sound!

Christopher from Bronx, NY on 11/7/2018

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I love this amp. It has nice depth and clean detailed sound. It brings out punch and life out of speakers even at lower volumes . I for one, like using the loudness control. So far I don't miss having a tuner as a blue tooth receiver device allows me to stream music well through the amp. I currently use this amp for a bedroom set up with elac debut 4's and an onkyo cd carousel player. Perfect for my needs. I recommend this amp. I can only imagine how the A-S 801 sounds like but that may be for another day and place. I got a deal on the scratch and dent model (thank you Conrad-) which looked fine (nothing that was very visible at all).

Pros: As mentioned - good clean sound - certainly enough power.

Cons: Break in period not really a con per se- just need to let it warm up and break in. Otherwise so far and so, so good!

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1 of 1 found this helpful

Yamaha A-S501

Ray from Alexandria, VA on 10/6/2018

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Still breaking in but sounding great! My first impression was not so good with some shrill highs...but after a week of listening to music and watching TV, things are really starting to smooth out. Pairs and works well with my Harmony remote. The box is a bit bigger than expected, so be prepared for that. So far very satisfied and looking forward to trying the biwire mode once I can build some more speaker cable.

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2 of 2 found this helpful

Not good enough

T from Binghamton, NY on 9/28/2018

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Muddy mid and high range, not enough power, very quirky loudness control. I do not recommend

Pros: None

Cons: See review

Crutchfield response on 10/1/2018
: This customer contacted our Customer Support team and set up a return. Purchases from Crutchfield can be returned or exchanged within 60 days.

2 of 5 found this helpful

Perfect Bedroom Amplifier

Robert from Bryn Mawr, PA on 8/29/2018

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I purchased this amplifier for my bedroom when the ancient Denon AVR I was using finally died. I chose it for the minimalist interface, and to match my CD-S300. I can operate the amp and CD player with the same remote, which is very handy. I chose the black model instead of silver to match the CD player. More on that later. What makes this amp perfect for a bedroom is that the power button actually turns the unit completely off. There are no standby LEDs when it is off, which is preferable when sleeping. The CD-S300 is also completely devoid of LEDs when off. The Denon it replaced was 85 Watts per channel, but could not bi-wire my Polk RTiA1 speakers. The sound quality was actually very good, so I wanted an amp that could provide similar power. The fact that I could bi-wire them with the A-S501 turned out to be a major bonus. The amp has more than enough headroom for the Polks, and bi-wiring really tightened up the sound. This is a really well built amplifier. The fit and finish are superb. Yes, the knobs are plastic, but they do not look or feel chintzy. I like the speaker terminals a lot better than the ones on my higher end Denon and Onkyo AVRs. My only complaints are with the availability of accessories. There is no coordinating silver tuner or entry level CD player, so I was forced to choose black, since I want the components to match. Also, the Yamaha Bluetooth adapter appears to be out of production, which is disappointing.

Pros: Plenty of power Bi-wiring capability Very nice speaker terminals Line level, phono, optical, and coaxial connections No LEDs when off Remote controls Yamaha CD player and tuner

Cons: Lack of coordinating accessories makes the black model more attractive than the silver, which is a shame. Yamaha bluetooth adapter no longer available

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4 of 4 found this helpful

Yamaha A-S501

Crutchfield customer from Brooklyn, NY on 7/15/2018

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great amp! sounds amazing!

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1 of 2 found this helpful

Great Amplifier

Dave from Mchenry, IL on 6/19/2018

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Awesome Amp for the price. Plenty of power.

Pros:

Cons: Wish it had an integrated power plugs for components.

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2 of 2 found this helpful

Pleasant suprise

Bill from Carlisle, PA on 6/7/2018

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Was looking for a good quality Integrated Amp and found the Yamaha A-S501 as a S&D for a good price point and thought I would give it a try. Sound quality is outstanding. I have an older Sony ES Receiver rated at 120 WPC and the Yamaha sounds more natural. I also hooked up my old Technics SL-1200 MK2 and love the sound of vinyl once again. This AMP really makes my B&W CM5 speakers come to life. The 501 is only 15 watts/ch less than the 701 and less expensive. I can't imagine there is much of a difference between the two AMP's.

Pros: Sound quality and features

Cons: Could use a light on volume knob.

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3 of 3 found this helpful

Yamaha A-S501

Crutchfield customer from Mobile, AL on 5/28/2018

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Someone complained (other supplier) that it lacked good bass and I could not disagree more. I have an old Carver HR772 that is rated with about 30 more watts per channel. The amp still works but the control for the inputs is not working properly...not bad for a 33 year plus receiver. It has great bass and the A-S501 is the same as far as I can tell. I arranged a quick swap to compare and the Yamaha is right there with the Carver. The only thing that I would like it to have is a means to tell the setting of the volume control. The Carver has a thin lighted slot which makes it easy to tell from across the room. The power is way more than needed to fill your living room unless you live in an auditorium.

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5 of 6 found this helpful

Yamaha A-S501

V. Feliciano from San Juan PR on 4/19/2018

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Very happy with this amp, specially with the price. Simple, very nice to look at and sounds great! My first Yamaha and love it so far! Great service by Tom!

Pros: Sounds great!

Cons: None so far...

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1 of 1 found this helpful

Yamaha A-S501

Crutchfield customer from Augusta, GA on 3/31/2018

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Man this amp is a beast and is worth every penny. I'm using this with old Pioneer speakers and with an Technic Turntable SL D -202 I'm hearing details off of my Vinyl records like I've never heard before I also bought the Onkyo C-7030 CD player also and the details from my cd's on this Amp is amazing. I have to also say the sales person Tyler was very very helpful and I have to give kudos for the date it was promise to be delivered GREAT JOB GUYS

Pros: Worth the Money

Cons:

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3 of 3 found this helpful

Sounds great,

Amadeus from San Francisco on 1/23/2018

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Huge improvement over my $200 entry level Denon Reciever. 85 Watts powering Klipsch R-9F is VERY LOUD. I could have saved money and got 60 Watt version. I like the simple analog controls. My 50 year old ears love loudness control. My kids love Bass adjustment. I would have liked 2 or more optical inputs. I have only 2 inputs both toslink. (1) Chromecast Audio (2) TV. Bought $20 toslink to digital coax converter for TV.

Pros: Sounds great, lots of power. No distortion even when windows are shaking. Best rated amp I could find online for the price. Simple digital controls. Ability to select speaker impedance. Runs cool..

Cons: Only 1 toslink input

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0 of 0 found this helpful

Very Nice Unit

Gary from Howard Beach, NY on 1/23/2018

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I purchases this unit to replace a 40 year old Onkyo A-7 integrated amp . The Onkyo had more features, but the Yamaha A-S501 has all that I needed, plus some new ones. I especially like the pure direct feature, which I use most of the time. It is impossible to read the position of the volume knob. To solve this problem I used a small piece of white graphic arts tape approximately 1/16" wide by 5/16" long and placed it over the small notch on top of the volume knob. I am now able to see the volume level position rotate from my couch using the remote. BTW the remote works very nicely. Although the phone section says it is for MM cartridges only, it works with my high output MC Blue Point cartridge without the need to turn up the volume control more than about 40 percent of it's total rotation. I am using the sub-out with my newly purchased Klipsch 10 R-SWi that I also bought from Crutchfield. Overall a very nice unit.

Pros: Pure direct feature, Sub-out

Cons: none

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0 of 0 found this helpful

Very Pleased with the Advice, Service & Amplifier!

Chuck from Brevard, NC on 1/18/2018

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Good, succinct & well-directed advice from Sam regarding the best-suited Yamaha amplifier for my needs; prompt shipping; and Wow, what an amplifier! I wish that I had moved up from my Denon receiver to this Yamaha amplifier years ago - what an absolutely amazing difference - it makes full use of my B&W speakers! The only gripe, and it's a small one, is that the receiver does not have an integral power outlet in which I could have plugged my CD player - oh well! I certainly recommend Crutchfield.

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Cons:

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1 of 1 found this helpful

Yamaha A-S501 BL

Jerry R from Sterling, AK on 1/2/2018

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So far so good. Purchased to replace system damaged in an earthquake 2 years ago. Enjoying CD collection again, but haven't connected to TV, laptop or streaming music yet.

Pros: Really drives the Klipsch Reference speakers.

Cons: None discovered yet.

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1 of 1 found this helpful

Yamaha A-S501

Crutchfield customer from Hollis, NY on 12/19/2017

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Beautiful sound, power, and ease of operation. Powers my 4 Bose floor standing speakers with ease. No regrets on this replacement for my Onkyo I.A.

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1 of 2 found this helpful

Clean sound.

Tom from Roanoke, VA on 9/14/2017

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Clean sound. More than sufficient power for medium-sized room. As usual, Crutchfield service first-rate.

Pros: Straight-forward integrated amp. Clean sound.

Cons: Power/source LED's too small. Mute only reduces sound. No AC outlets for system components.

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4 of 5 found this helpful

Very Good Amp

John from Warren, OH on 5/1/2017

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Very good amp and at 85 watts per channel has plenty of power. The first thing I noticed when replacing my Sansui B-300 amp was the detail I herd of the cymbals. then after listening further the clearness of all the instruments. The bass is good but I'm running 4 floor standing speakers. I then hooked up my subwoofer and I'm still in the process of adjusting the sub to my liking but I'm not getting the mix I'm after, no fault of the amp of course,. I decided not to use my sub woofer and the amp handles the bass perfectly. I would suggest only using a sub if your only using bookshelf speakers. My next upgrade are new speakers. One drawback is how bad cd's sound. I started to play several different cd's and they just sounded tinny. Streaming music is much cleaner and pleasant to listen to. Better amp = more detail. And of course vinyl is the best .

Pros: Reproduces music perfectly , plenty of power at 85 watts

Cons: hard to see tiny indicator lights

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3 of 3 found this helpful

Yamaha A-S501

Crutchfield customer from Zeeland, MI on 4/4/2017

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I love my new Yamaha integrated amp works very good with my klipsch heresy speakers

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3 of 4 found this helpful

Yamaha A-S501

Rich from Horseheads, NY on 3/8/2017

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I love this integrated amplifier. I wanted something specifically made just for old school music listening, I've found it with this product.....It sounds amazing paired with my Monitor Audio Bronze floor standing speakers......

Pros: Amazing sound...

Cons: Knobs should be metal, plastic a little fragile.....

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5 of 5 found this helpful

Awesome amp

Paul from San Francisco, CA on 2/21/2017

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My old Harman Kardon hk880 Vxi receiver died after 25 years. I loved the natural sound of that receiver and was tempted to have it repaired. But as with most electronics, technology does improve with time and I thought that it would probably not cost much more to get a new receiver (possibly even less). I was drawn to the specifications/reviews of this integrated amplifier and decided to take a chance--and I am so glad I did. The sound is also very natural and can get quite loud without distortion. Grant it I am not a professional audiophile but I am hearing things I have never heard before. I have a pair of Definitive Technology BP7006s which work well with this amp. I am most impressed with the built in DAC--by using this input with an Airport Express digital optical output, the music streamed from my iTunes on the iMac sounds so similar to CD's that I am going to get rid of my CD player. I really like the clean appearance of the front panel. This is an awesome integrated amp for the price point. I love it!

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5 of 6 found this helpful

Impressive Amp!

JC from Plymouth, WI on 1/1/2017

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I purchased this amplifier with the intention of fulfilling a hobby of vinyl records. With my Definitive Technology BP10's sitting idle in the basement under plastic, I needed an amplifier that would provide enough power to my towers. This amp is nothing short of impressive in look, feel as well as power and layout of the controls. I have never heard these speakers come alive with such rich, full sound. I highly recommend this amplifier.

Pros: Power Controls Layout

Cons: Have not come across any yet.

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3 of 3 found this helpful

Good stereo product

Everett from Ashburn, VA on 11/20/2016

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There really isn't much to say. It's an stereo integrated amp and it's designed to do one thing. This one does it as well as I expected at it's price point. Does an adequate job of driving my Polk Audio RTi A7 speakers.

Pros: Does it's job

Cons: None

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2 of 4 found this helpful

Yamaha A-S501

Crutchfield customer from Bozeman, MT on 9/30/2016

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I recently replaced a high end Tandberg amplifier with a new Yamaha A-S501. The Tandberg was 30 years old and had developed a clipping issue in one channel after many years of use. The Yamaha compares very favorably to the old amp, driving my Klipsch towers in a very clean and powerful manner. The controls have a nice precise feel. I use the stereo to play blues backing tracks while playing along with my electric guitar and the Yamaha has plenty of power to keep up with the tube guitar amps. It's a quality component that delivers as advertised. Thanks to Crutchfield and Yamaha.

Pros: power, clarity, nice controls and features

Cons: hard to see the control settings on the black face without direct lighting

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9 of 11 found this helpful

Excellent integrated amp!

Paul from Landers, California on 9/16/2016

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I purchased this unit to replace my venerable Yamaha A-1020 that (until it died) has been making thunder for me since I was stationed on Okinawa in 1985. While this unit doesn't have the features that my A-1020 had, it has the same great sound, and hopefully the same durability and longevity.

Pros: Simple, powerful and made by Yamaha.

Cons: No provision for a turntable with a moving coil cartridge, moving magnet only.

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2 of 2 found this helpful

Better than what I had!

Ty from Nashville, TN on 9/6/2016

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Nice!

Pros: Great sound! Later this week I'm going with a cartridge upgrade (for my TT) and expect it to sound even better!

Cons: I don't notice much with the 'Pure Direct' button engaged.

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4 of 4 found this helpful

Product Review

Steve H from Westfield, IN on 8/4/2016

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My 20 year old Yamaha took a slow and painful death.... Then... with the help of the staff of Crutchfield I ordered my AS 501 ..... Kinda surprised that you can't hear it in the background....It is everything that an old music guy could ask for. My only complaint... or request is that they could have put a lighted volume indicator so that us old, blind guys could see the volume go up and down in the dark...... I know, this is trivial.... but..... The Amp is everything I wanted and needed....... Next... an upgrade to my HPM 100 Speakers.... which are still in tact . Thanks Guys.... You Are The BEST !!!!!!!

Pros: True Sound

Cons: Lighted Volume Indicator .... I know that is Silly .....................

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3 of 3 found this helpful

The amplifier is great i used it also for surround sound love it

More quality music an sounds great love it from Mount Vernon, NY on 5/22/2016

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My next up grade be the 100w everything about the amplifier is great no complain

Pros: This changer is worth the money the only thing is the stand by i don't like the power company sounds lovely

Cons:

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1 of 6 found this helpful

Great integrated amplifier

Jesse from Utah on 5/18/2016

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I was looking for a good IA for a few months, and finally chose the Yamaha based on good looks, great price, and a lot of good reviews.

Pros: Sound is detailed without being peaky. It just sounds natural.

Cons: The buttons are a bit plasticy, and the power cord is no longer detachable for some reason. But all in all its a great integrated amp

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1 of 1 found this helpful

Yamaha A-S501 Integrated amp

Crutchfield customer from Saginaw, Michigan on 4/26/2016

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I have just had a few hours with the amp and have, today, mated it to a Yamaha CD C600 disc player. The amp has plenty of power. The look is clean and simple and the setup was a breeze. The connection with the "Direct" option between the amp and the CD player is not yielding the spatial separation for which I was looking. I suspect the CD Player to be the culprit. I am running it thru 4 old JBL Jubal 65s and they are unusually bright anyway.

Pros: Nice design, Plenty of power, very friendly to install.

Cons: None yet.

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4 of 8 found this helpful

Blown away

Paul from Frederick, MD on 4/11/2016

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I bought this to replace a home theater receiver that I was using mostly for vinyl playback. The difference is night and day. I use a diy vacuum tube phono preamp it sounds amazing with the "pure direct" feature. Plus if a certain record sounds flat I can use the nice bass/treble adjustments. I am very pleased.

Pros: Great for music. Well built and powerful

Cons: None so far...

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6 of 7 found this helpful

Great Step Up or Entry Amp

Jeff C from Arlington, TX on 2/5/2016

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Recently purchased this integrated amp as a "step up" for dedicated vinyl hi fi system. I had been using my 5.1 receiver and an outboard phono amp stage for records and decided enough was enough! This Yamaha amp is exactly as advertised. Its clear and clean, drives my speakers well and its simple. I tried it using the included phono stage and with my own phono stage and the one included in the AS 501 sounds better. I like the remote too. The loudness feature is a nice bonus. Since I am using this exclusively for my turntable I haven't tried any of the other inputs. I do like the pure direct feature as well. I have used that from time to time just to compare sounds. I would conclude that if you are like me and want to step up and get a dedicated stereo amp that doesn't break the bank or you want to use this as an entry back into 2 simple channel realm take a good look at this.

Pros: value, sound, simplicity, phono stage

Cons: none

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5 of 5 found this helpful

for what you pay

Crutchfield customer from Colorado on 1/18/2016

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good product, easy set up. a bit muddy on the mid range and fuzz highs, but a lot better than most at this price range. Would estimate that one would have to spend 3 times as much to get to the next level of sonic bliss. very happy with product, as I knew what to expect. not much better out there for the price

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3 of 6 found this helpful

Yamaha A-S501

Don from Pennsylvania on 12/18/2015

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Love this amp smooth power, nice style.

Pros: Power features price

Cons: None

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1 of 3 found this helpful

Yamaha A-S501

J Flakkee from Lehigh Valley , Pennsylvania on 12/10/2015

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Was as described nice unit sounds great

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Cons:

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4 of 4 found this helpful

Yamaha A-S501

Robert M from Arizona on 12/4/2015

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Excellent for the price

Pros: great sound, easy to use

Cons: None

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1 of 1 found this helpful

Great Integrated Amp

Bunionhead from Michigan on 7/14/2015

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I replaced my 500 Watt Hafler amp and preamp with this. Outside of the improvement, I can't tell the difference (my apologies to Groucho).

Pros: Looks good, sounds good. Great sound. I like the variable loudness compensation. Doesn't seem to produce too much heat. I like the digital input as I pair this with a music subscription and a Windows computer.

Cons: I wish that the input indicator lights were larger. I have to bend down to see what the input the selector is set to. Also, there is almost no indication of the volume level. Indicator lights for that would be great. Minor gripes for sure. One more thing, it requires that nothing be set on top of it, as it vents out the top. I have a monitor on it with a very open base. So far, no problems.

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9 of 10 found this helpful

Pure Sound

Tomy S from Puerto Rico on 7/2/2015

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Solid Product, Pure Direct really works.

Pros: Good features and very simple.

Cons: None.

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2 of 2 found this helpful

Excellent

Crutchfield customer from Texas on 6/26/2015

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I can't complain about a single thing, I paired it with my MartinLogan ESL speakers and Onkyo CP-1050 turntable, huge sound upgrade from my Marantz HT I was using them with.

Pros:

Cons:

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0 of 0 found this helpful

Mr.

Weedlessepps from North Carolina on 6/8/2015

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Powerful, Efficient, with wonderful sound reproduction. Was replacement for a original Yamaha A500 amp, which was over 30 years old and played hard. Can't wait to utilize the digital options included with amp this is from a real analog lover. Albums and cassettes have new life. Could even power my moving coil stylus through circuit. All in all great product

Pros: Simplicity

Cons: None

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3 of 3 found this helpful

Simplicity Delivered

MRod from North Carolina on 4/16/2015

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I wanted the best value to drive my GoldenEar Triton 7s, and I found it with the Yamaha AS-501. I by-pass the tone controls with the "Pure Direct" option engaged, and I get the clean sound I wanted. What sold me on the Yamaha Integrated amplifier was that I can attach my Blue-ray device to deliver great 2.1 sound--yes, sub-woofer and phono outs are part of this great deal. My unit came from the Outlet shop and was sold as a "scratch and dent." The Yamaha arrived in the original box with no scratches, dents, smudges--although a small chunk of Styrofoam had broken off from the packaging holding the unit. I can live with that! Finally, I have to say that the remote with this unit is fantastic due to the uncluttered layout of the buttons. I love the way when I press MUTE, the volume ramps down to a quite yet audible level.

Pros: Value. No frills, but the unit delivers clean, uncolored power that can drive 4 ohm or 8 ohm speakers. Remote is uncluttered which means you can quickly locate the volume and mute button when you need them.

Cons: The dials have the look of brushed aluminum, but they are plastic; not a problem for me but maybe a knock for some.

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6 of 7 found this helpful

Outstanding quality, amazing sound

Thomas from Atlanta, GA on 10/23/2014

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I purchased the A-S501 to replace an older integrated I had. I was slightly concerned about how the sound would differ from my 70's amp that I was previously using but the Yamaha has really blown me away with it's sound quality. I love having the flexibility with digital and analog inputs and this is a definite upgrade to my previous setup. The only negative I would state is that on Yamaha USA's website they list this unit as having all aluminum face and aluminum knobs but I can report that all of the knobs are plastic, although very nice looking plastic.

Pros: Sound quality, appearance, build quality, input selection, DAC

Cons: Plastic knobs

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12 of 15 found this helpful

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More details on the Yamaha A-S501

Stacey B.

Features & specs

Performance Specs
Watts RMS per Channel (8-ohms) 85
Watts RMS per Channel (6-ohms) 100
Watts RMS per Channel (4-ohms) Not given
Frequency Bandwidth 20-20k
THD 0.019%
Minimum Impedance 4 ohms
Signal to Noise Ratio 99
Digital Music Features
Built-in DAC (Digital to Analog Converter) Yes
High-resolution Audio Playback No
Bluetooth No
Wi-Fi N/A
Connections
Total Analog Inputs 6
Phono Input Yes
Optical Digital Inputs 1
Coaxial Digital Inputs 1
USB Input No
Preamp Outputs Sub
Headphone Output 1/4"
Dimensions and Warranty
Width (inches) 17-1/8
Height (inches) 6
Depth (inches) 15-7/16
Weight (pounds) 22.7
Parts Warranty 2 Years
Labor Warranty 2 Years

Product Research

Features
Controls
Connections

Features

"Natural Sound" Concept: Yamaha, with a long history of over 125 years as a musical instrument maker, also has a high reputation for HiFi components. Yamaha's A-S501 integrated amplifier takes advantage of this rich experience and high technological expertise. Based on the concept of "Natural Sound", for reproducing all music as it really sounds, and built with scrupulous care from circuit design to basic sound production, the A-S501 reproduces high sound quality and musically rich sound.

Proprietary Yamaha Technologies: The Yamaha AS-501 integrated amplifier employs proprietary Yamaha technologies for optimum performance and sound reproductions.

  • ToP-ART Design: When processing and transmission of the audio signal is simple and direct there is less chance of it being affected by noise and distortion. Yamaha's amplifier design technology called "ToP-ART" features an I/O (input to output) Direct Symmetrical Design, with left and right channels organized in a straight, symmetrical layout for highest signal purity.
  • ART (Anti-Resonance and Tough): In addition, the ART (Anti-Resonance and Tough) Base bottom chassis and a solid center bar provide high-rigidity support and vibration damping.

High Current Amplifier: The Yamaha A-S501 features a dynamic, high current stereo amplifier with low impedance drive capability. The amp is rated at 85 watts x 2-channels, measured from 20-20 kHz into 8 with 0.019% THD (100 watts x 2-channels, measured from 20-20 kHz into 6 with 0.038% THD).

High Quality Parts: Custom-made power transformer, custom-made block capacitors, two direct signal path speaker relays, one-point grounding system, aluminum-extruded heat sinks and other top-quality parts effortlessly handle demanding audio signal conditions. The quality of each individual part, as well as how they work together, basically determines the sound quality of any component. Yamaha uses only very high quality parts, carefully selected and tested.

Sophisticated Front-Panel Design: With a beautifully simple and unique design inherited directly from Yamaha's HiFi audio components, this amplifier also boast an easy-to-operate button layout. The aluminum front-panel has a richly textured silver hairline finish. The control knobs are also of the same luxurious construction as used on our top-end models. The rotary encoder makes it quick and easy to select input sources. The luxury hairline finish material offers a nice tactile feeling. LEDs clearly show which source is selected, so you can easily switch sources even in a dark room

Controls

Pure Direct Mode: The Pure Direct mode causes the music signals to travel the shortest possible circuit route, bypassing the buffer amp and the tone, loudness and balance controls to virtually eliminate any signal degradation for the purest sound quality.

Variable Loudness Control: The A-S501 also feature a new analog loudness control on the front-panel that uses electronic volume for higher sound quality, which lets you adjust the loudness effect as desired. Separate from the overall volume, this controls the balance of the low- and high- frequency sounds, providing full tonal range at any volume level; compensating for the natural loss in the human ear of high and low frequencies at soft levels.

Tone Controls: The integrated amplifier features independent bass (20 Hz) and treble (20 kHz) controls so you can increase or decrease the low and high frequency response (+/-10dB). You can also adjust the output balance of the left and right speakers.

Impedance Switch: The integrated amplifier features a rear-panel impedance switch to match the impedance level of the speakers connected. Choose High or Low:

  • High: Select High if using one set (A or B) of speakers with impedance of 6-ohm or higher; when bi-wiring the impedance of the speaker must also be 6-ohms or higher.
  • Low: Select Low if using one set (A or B) of speakers with the impedance of 4-ohm to 6-ohm; if using two sets (A and B) of speakers simultaneously, the impedance of each speaker must be at least 8-ohms; when bi-wiring the impedance of the speaker must also be 4-ohms to 6-ohms.

Simple Remote Control: The clean, simple design of the remote control provides easy-to-understand one-hand operation. The easy-to-use design makes it simple to adjust song volume and order. The remote has a sophisticated looking hairline finish that matches the design of the amplifiers. You can also use the remote to control a Yamaha CD/SACD player.

Auto Power Standby: The amplifier has a power management function that detects when it hasn't been used for a long time (about 8 hours) even though the power is on, and automatically shifts it into standby mode. So even if you forget to turn it off, power consumption will be minimized.

Connections

Gold-Plated Terminals: The Yamaha A-S501 has gold-plated terminals for all of its inputs and outputs. These gold-plated terminals ensure a high quality connection that prevents signal loss.

Analog & Digital Inputs: The Yamaha A-S501 integrated amplifier offers analog & digital inputs for connection of a variety of home audio components.

  • RCA + Phono: The Yamaha integrated amplifier is equipped with six analog stereo (RCA) inputs for connecting external analog audio sources, including a turntable. The Phono input can be used to connect a turntable with an MM phono cartridge to play vinyl records. The unit's Phono input also features a ground terminal.
  • Optical & Coaxial Digital Inputs: The A-S501 is equipped with both optical (toslink) and coaxial (RCA) digital audio inputs. The optical and coaxial inputs will accept 2ch PCM (not Dolby Digital/DTS). The audio stays in the digital domain, giving you pure, pristine dynamic sound for all your entertainment sources, from sports and other programs to movies and concerts.

Recording Outputs: There are also two pair of RCA outputs for recording audio through the amplifier to recording device.

A & B Speaker Terminals: The Yamaha integrated amplifier features binding post terminals for its A & B speaker outputs. You can use the A & B speaker outputs to power two pair of speakers, or bi-wire a single pair of compatible speakers. The terminals are not 5-way binding posts because a plastic collar prevents their use with spade lugs and they are too far apart for dual banana plugs.

Sub Output: A terminal for connecting a subwoofer is provided, allowing you to increase the bass output of your system for a more powerful sound with better overall sound quality

Headphone Output: The A-S501 integrated amplifier is equipped with a front-panel 1/4" headphone output for connecting a pair of headphones (sold separately). The headphone output and speaker outputs will work simultaneously; you will need to rotate the speaker selector switch on the front-panel to the Off position to turn off the sound from your connected speakers.

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