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AudioQuest Big Sur

Stereo interconnect cable with RCA plugs (1 meter/3.3 feet)

38 Reviews

Item # 703BSRR1M

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Our take on the AudioQuest Big Sur

"Do no harm!" AudioQuest has been creating high-performance audio cables for more than 30 years, guided by this simple mantra. In AQ's view, the perfect cable would be one that adds nothing — no noise, no distortion — to the original signal. With its Big Sur cables, AudioQuest pursues that ideal with the aid of some high-tech materials and designs. You might not expect a joined cable this thin and lightweight to deliver such great sound. So how does AudioQuest makes it happen? It's all about the details.

"Do no harm!" AudioQuest has been creating high-performance audio cables for more than 30 years, guided by this simple mantra. In AQ's view, the perfect cable would be one that adds nothing — no noise, no distortion — to the original signal. With its Big Sur cables, AudioQuest pursues that ideal with the aid of some high-tech materials and designs. You might not expect a joined cable this thin and lightweight to deliver such great sound. So how does AudioQuest makes it happen? It's all about the details.

Solid Perfect-Surface Copper+ (PSC+) conductors

One of the most important materials that goes into an audio cable is the metal used for its conductors — the parts of the cable that actually carry the signal. Big Sur cables feature conductors made from a material AudioQuest calls "Perfect-Surface Copper+." PSC+ starts with ultra-pure copper, formed into solid (not stranded) conductors with an astonishingly smooth surface. The end result: clean, low-distortion signal transfer for transparent sound.

Advanced cable geometry

While many cables use a single path for both the ground and shield, AudioQuest uses a design they call "double-balanced asymmetrical geometry." This design separates the ground and shield paths for clean, quiet performance.

Cold-welded "Purple Copper" connectors

Big Sur's connectors are cold-welded, rather than soldered, which eliminates a common source of distortion found in many audio cables. They're made from high-purity, gold-plated "Purple Copper," which outperforms more common connector materials where it counts — in the listening room.

This cable is equipped with dual RCA connectors at each end. Mini-to-mini and mini-to-RCA versions are also available.

Product Highlights:

  • length: 1 meter/3.3 feet
  • stereo cable with dual RCA connectors at each end
  • solid Perfect-Surface Copper+ (PSC+) conductors for super-clean, transparent sound
  • foamed polyethylene insulation for low distortion
  • metal-layer NDS (Noise Dissipation System) shields against RF interference
  • double-balanced asymmetrical cable geometry separates the ground and shield for quieter performance
  • black and brown braided jacket
  • cold-welded, gold-plated pure "Purple Copper" RCA plugs feature a solder-less design for lower distortion
  • warranty: 5 years
  • Our 60-day money-back guarantee

What's in the Box:

  • 1-Meter stereo RCA cable

AudioQuest brings out the details in your music! Outstanding!

Eric, Galveston, TX


AudioQuest Big Sur Reviews

Average Customer Review(s):

(38 Reviews)

AudioQuest Big Sur

Eric from Galveston, TX on 3/3/2019

Crutchfield Customer Review (What's this?)

AudioQuest brings out the details in your music! Outstanding!

Pros: Build Quality!

Cons: None unless your RCA connectors are far apart like a power amp.

Wave of sound with Big Sur

Michael from Long Island, NY on 8/8/2018

Crutchfield Customer Review (What's this?)

Very good cable, profile is slim which makes it useful if you have an audio rack with a cable management hole. Sound is full and clear. One caveat - if your audio outputs are any distance apart, these cables will not work. With my Yamaha SACD player, the cable is fine. On my old Marantz, they wouldn't have worked because the outs were farther apart.

Pros: Slim profile, very good sound, quality of build.

Cons: May not work with equipment where the unbalanced audio outputs are not next to each other.

Terrific Cables

Mark from Monroe, WA on 5/27/2018

Crutchfield Customer Review (What's this?)

I've been slowly swapping-out all of my old RCA interconnects. I like Audioquest's product intent of "do no harm." While I don't believe interconnects can realistically improve upon the signal; I do agree that they shouldn't do anything to degrade it either. Depending on the application (home theater, PC audio, analog audio), I've opted to use Audioquest's Cinnamon, Golden Gate and Big Sur cables. I'm using the Big Sur cables for my higher-end phono/headphone listening. I like their compact size, build quality and, um, the cable finish/color - don't tell my wife, but I think they're kind pretty. It's really kind of a shame they're hidden, out of sight.

Pros: Material selection. Build quality. Size. Color/Finish. Good Assortment of Lengths.

Cons: A little stiff, torsional resistance - particularly noticeable on the HDMI cables

Back in Business

Joe from Cheney, WA on 1/23/2018

Crutchfield Customer Review (What's this?)

The AQ Big Sur are the real deal. I connected them to 45 yr old dual 1214 turntable that was sounding a little lackluster. I cleaned the outputs with alcohol and a Q-tip, attached the Big Sur cable and were back in business. The cable cost as much as the turntable cost new, but is way better than the one that came with. The second one I attached to a cassette player and it works great!

Pros: Well shielded,well built

Cons: Expensive, but hey, nothing is to good for my equipment

High quality cables

Howare from Los Angeles, CA on 1/1/2018

Crutchfield Customer Review (What's this?)

My sales person has never misled me and suggested that the extra money for these was well worth it. So far, I take it on faith. But I'm sure it's right.



Quality Made Cable

Ronnie from Asheboro, NC on 11/17/2017

Crutchfield Customer Review (What's this?)

Really well made cable. I used these to connect my new Yamaha CD-S1000 to my Integrated Amp and they sound really good.

Pros: Easy to connect, Sound is Clear and Precise,

Cons: None

Cables do make a difference

Ed from Snohomish, WA on 11/5/2017

Crutchfield Customer Review (What's this?)

Cable quality for phono interconnects make a big difference! I ordered quite a few cable interconnects for my turntable to amp setup. Evergreen, Golden Gate, Big Sur, Sydney, Blue Jean custom cable, and Emotiva - all in 1 meter lengths. I then recorded the noise levels with the A/D converter with the Music Hall PA2.2, with the needle up over the record platter spinning (Dual 701). There were obvious differences in noise levels. I definitely have too much wiring in the walls nearby causing interference, and some cables did better at shielding than others. The Blue Jean cables were the best, in my environment getting around a -80db noise rejection level. However they were so thick, with massive connectors that I really could not use them - the Emotiva performed just as well, but same problem - extremely thick and connectors were too big ; however the Big Sur was right behind at -79.5 db; the more expensive Sidney did no better than the Big Sur, so it was an easy choice. The lesser cables were pretty far behind, at -65db or worse. The Evergreens are perfectly fine for line level, but for phono, it's the Big Sur for me.

Pros: Excellent Shielding and signal transfer

Cons: None

AudioQuest Big Sur

Crutchfield customer from Richmond VA on 9/2/2017

Crutchfield Customer Review (What's this?)

Smooth balanced sound.



Natural sound

Tad from Gallatin, TN on 2/17/2017

Crutchfield Customer Review (What's this?)

Fantastic cable. I went from optical back to this analog cable for a more natural sound.

Pros: Smooth, big, natural sound.


Great cable

Steve D. from Aldie, VA on 4/22/2016

Crutchfield Customer Review (What's this?)

I purchased one of these Big Sur 1M RCA male-to-male cables and two 1M RCA male-to-male Golden Gates (next step down from the Big Sur). I'm using all three to connect Logitech Squeezebox digital music players to various receivers in different rooms. The Squeezebox has a very high end Burr-Brown DAC built right in, so I prefer using analog cables rather than rely on a receiver's DAC. The music input source is uncompressed WAV CD rips streamed from a NAS server in the basement with in-wall CAT6 transmission all the way. This is a fine little cable. It's very thin, flexible, and low-key. It clips on nice and tight. Sound quality is excellent. For all applications I was replacing 15-year-old Monster cables that were huge and bulky. Some people say they can't hear a difference between cable types, but some people also say they can't tell the difference between a WAV and a compressed MP3. I figure if I'm dropping several thousand on high-end audio, the least I can do is make sure my analog cables are high quality. Digital cables probably don't matter, but analog RCA does. I put the more expensive Big Sur in our main family room system (Yamaha receiver, Definitive Technology speakers) and the Golden Gates in the basement (Yamaha receiver / Bose and Klipsch speakers) and master bedroom (powered Mackie studio monitors).

Pros: Great sound Peace of mind that your cable isn't the limiting factor in your sound quality Small, compact, single-line

Cons: None

Audioquest Big Sur

Trevor from Pennsylvania on 12/30/2015

Crutchfield Customer Review (What's this?)

Purchased another Big Sur cable to run from Turntable to Phono Preamp. Now have Big Sur cabling throughout my system. Wanted to keep it consistent. You can hear the difference in my system. I live in the 1-day area for Crutchfield. Meaning that if I buy a product one day - the product is at my door the next business day morning. Sometimes I think if I were to order a pizza and a product from Crutchfield - Crutchfield product would get here before the pizza.

Pros: Quite simply better sound. Years ago I would have told you that you were a fool to *upgrade speaker cable, interconnects, etc. but after reaching a 5K dollar figure for my components, I could hear a difference in sound when swapping out cables.

Cons: My experience is that I generally could not hear the difference of a cable with an entry level system. *I used the Evergreen cable early on and while the music "settled" there really was not a OMG WOW moment. Once I had put a few thousand into upgrading my equipment, I traded the Evergreens out for the Big Sur and got noticeably better sound. I have also put oxygen free copper cabling in place for speaker runs as well replacing Monster speaker cable.

Audio Quest = Big Sur

Jack D. from Illinois on 4/8/2015

Crutchfield Customer Review (What's this?)

Initially, I thought the RCA cables were so small compared to the other cables I had. However, the sound of the Audio Quest is much clearer, due to less distortion, and less static feed back. In this case, it is not the size of the cable, but the inner components of the cable that make the noticeable difference!

Pros: Excellent interconnects.

Cons: N/A

Auidio quest bridges and falls edition

Ivan Escalante from Minneapolis, MN on 10/10/2013

I love Audio Quest, I am a big fan of their cinnamon line of cables, using all cinnamon cables in my theater room. I discovered the new line of "bridges & falls" interconnects. They put the same amount of quality control and engineering into their low end as the do there high end end. Leta face it, many of us are not going to spend $1000 for their Dimond line HDMI cable. But most of us may splurge for many of their others, optical, subwoofer, interconnects. Great company, never had any problems. Designed and made in USA. what more to ask from them... anyway the new bridges and falls line combined both interconnects in the same line, saving them money and passing it to us the consumer. I love them, cant wait to see whats next. Thanks, Ivan in MPLS

Pros: Pro quality, best materials, warranty

Cons: Expensive

Big Sur Analog IC's

Chuck from Buchanan, Ga. on 7/19/2013

Crutchfield Customer Review (What's this?)

Five Stars so far! Only time will tell the rest. I'm in the process of replacing some older, longer interconnects. When it comes to cables I believe in the "Do No Harm" company. I'm not comfortable spending big money for questionable claims, nor am I comfortable with using ic's that may or may not be up to the task at hand. The one meter Big Sur fits my budget and application. I'm using one for dac out to pre. I purchased second one for the newly arrived Denon 720 network player. The best hardware is never heard! It's only the messenger.

Pros: They appear to be value oriented interconnects at a price that won't cause me to lose sleep.

Cons: No downside for me.


Hands-on research

Product Research


Big Sur Series Stereo RCA Cable: The AudioQuest Big Sur stereo RCA cable is terminated by a gold-plated male stereo RCA connectors on each end. The AudioQuest Big Sur stereo RCA cable is available in the following lengths.

  • 0.6 meter (2')
  • 1 meter (3' 4")
  • 2 meter (6' 7")
  • 3 meter (10')
  • 5 meter (16' 5")

Solid Perfect-Surface Copper+ Conductors (PSC+): Perfect-Surface Copper+ has an astonishingly smooth and pure surface. Proprietary metal-processing technology protects the wire's surface at every stage of drawing and fabrication. When high-purity low-oxide copper is kept as soft, pure and smooth as possible, it becomes a wonderfully low-distortion PSC+ conductor. PSC+ is manufactured by applying the same exceptional technology to an ultra-pure copper. The resulting sound quality is even more focused and simply less in the way. All of Big Sur's conductors are solid. Electrical and magnetic interaction between strands in a conventional cable is the greatest source of distortion, often causing a somewhat dirty, harsh sound. Solid conductors are fundamental toward achieving Big Sur's very clean sound.

Foamed-Polyethylene Insulation: Any solid material adjacent to a conductor is actually part of an imperfect circuit. Wire insulation and circuit board materials all absorb energy (loss). Some of this energy is stored and then released as distortion. Big Sur uses air-filled Foamed-Polyethylene Insulation on both conductors because air absorbs next to no energy and Polyethylene is low-loss and has a benign distortion profile. Thanks to all the air in Foamed-PE, it causes much less of the out-of-focus effect common to other materials.

Metal-Layer Noise-Dissipation System (NDS): 100% shield coverage is easy; preventing captured RF Interference from modulating the equipment's ground reference requires AQ's Noise-Dissipation System. Noise-Dissipation System prevents a significant amount of RFI from reaching the equipment's ground plane.

Double-Balanced Asymmetrical Geometry: Purposely designed for single-ended applications, Double-Balanced Asymmetrical Geometry offers a relatively lower impedance on the ground for a richer, and more dynamic experience. While many single-ended cable designs use a single path for both the ground and the shield, Double-Balanced designs separate the two for cleaner, quieter performance.

Cold-Welded, Gold-Plated Pure "Purple-Copper" Plugs: This plug design allows for a connection devoid of solder, which is a common source of distortion. Because the ground shells are stamped instead of machined, the metal can be chosen for low distortion. Purple-Copper offers a cleaner, clearer sound than the nickel-plated or OFHC metals commonly found in competing manufacturers' plugs.

Directional: Arrows on the connectors indicate the preferred signal path from the source component to the input.

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