JL Audio RD900/5

Superior quality is what JL is all about and this amp is no different. Plenty of power for my Polk 6.5" components and Jl 12TW1-2 sub and it fits nicely under a seat out of the way.

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Love it

Awesome powerful amp. Lots of info out there to make sure it's set up correctly. The clipping light makes it so anyone can do it!

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JL Audio RD900/5

Excellent power for all in one complete system .

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JL Audio RD900/5

Rocks hard and very easy to set up

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JL Audio RD900/5

Perfect amp the best

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JL Audio RD900/5

JL amps never disappoint!! Plenty of power without getting crazy on needing to upgrade the battery/alternator. Pushes my Kicker Comp R 12's perfectly all while running four other channels. The only Amps I ever buy.

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JL Audio RD900/5

Small but power

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Excellent sound , easy setup!

First time doing a full install on one of my trucks, with so many solid choices the JL RD900/5 was recommended to me by a friend who is an installer. Glad I made the choice, this thing makes everything come to life! Running 2 sets of Audio frog GS682 speakers and a cs110lg tw3 10" JL sub enclosure in a regular cab super duty and it sounds killer! The install and initial setup was super easy, the led clip indicator lights make it almost fool proof even for a DIYer. Give it a shot you won't be disappointed, great amp for the price range!

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JL Audio RD900/5

Handle all my speakers and sub superbly!!

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Plenty of clean power.

I paired this amp with some Focal ICS series speakers in the front and rear doors, as well as a JL Power Wedge 10" subwoofer. The result is outstanding. Sound is crystal clear and the bass is excellent. There is plenty of power. I use a Pioneer AVH-W4500-NEX as my head unit. I am Very pleased with the results. Excellent sound, superb bass, and flexible control!! Couldn't be happier!!

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Clear Sound with Power

Outstanding amp for my Durango with 6.5 JL components in the front, 6.5 Polk 2 ways in rear, and 12 inch Kicker sub. Much clearer than the Kenwood 50x4, 500x1 amp that I tried first.

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JL Audio RD900/5

Easy installation, easy adjustment. Very well built. Powers my Focal speakers and 10" w3 no problem

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Worth it

The amp is great, just as advertised! I like how Crutchfield's site lets you input your car info and then only things compatible with your car show. Things maybe a tiny bit more $ here vs other online retailers, but the overall buyer experience is better here. Crutchfield includes vehicle specific directions for install so it was less confusing to do my own install. I have the amp in my 2011 Subaru Legacy 3.6R limited, it powers all my door speakers plus my JL 10" sub no problem. If anything, the amp might too powerful for my door speakers.

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Another great JL Audio product.

JL Quality is always great. Could've got something cheaper but knew in the back of my mind I prob be wishing I went with the JL. Powering dash 3 1/2's, door 6x9's and rear door 6.5's along with a single 10" sub. Sounds awesome. I didn't want something to rattle the license plate off more of a good solid sound and I have achieved that goal. It's plenty loud in fact alot louder than I will ever play it. What I like about it is its crystal clear and the bass is tight and solid.

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Best 5 Channel Amp

Let me save you time and money. If you are thinking about getting this amp do not hesitate. I've been through several amps in the last 6 months and this has everything you would want. I listen to a wide variety of music and this amp delivers clean, quality and true reproduction from whatever source you use. I've had the Pioneer DX975, Kicker 44KXA8005, Rockford Fosgate T1000X5ad and a Boss PV3700. Nothing comes close to the JL Audio. Easy install in a nice, clean, compact package. There is no need for a subwoofer volume control because it's not amplifying garbage frequencies. Everything sits right where it's supposed to. I can't say enough how great this amp sounds.

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JL Audio RD900/5

Very satisfied with the amp so far. Set up was fairly easy and the compact size worked nicely with my 2001 Ram 1500 under the rear seat. I was able to set gains with the test tones from JL Audio's website before I hooked up the speakers. The clipping LED's were very handy in doing this and getting the gains set to a safe level that would prevent clipping or distortion. i currently have this amp connected to 4 coaxial speakers (Kenwood KFC-174's) and a JL Audio 12in Stealthbox. More than adequate power for my listening needs. Huge improvement over the sound coming from my Pioneer MVH-S522BS.

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JL Audio RD900/5

Shipping was super fast and I cant say how awesome the sales and the tech people are!. Stereo sounds awesome now. Thank you!

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JL Audio RD900/5

Very powerful amp!

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JL Audio RD900/5

Well made and simple to setup.

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JL Audio RD900/5

got it all wired up and found out it is defective. Sending a new one so hopefully no issues

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Fantastic Amplifier

Fantastic amp. I never uses class D for door speakers. Always a class A/B but I can honestly say the SQ is great with this amp. Clean and more power than I need. It's powering 2 focal access 10" subs and focal access components up front and co ax in the rear. Fit under my drivers side seat in my Subaru with ease. Very happy with it!

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Simple and effective

Easy setup. Like having clipping indicator lights. I imagine it'll work even better as I tune it in.

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JL Audio RD900/5

Great amp. User friendly. Clipping LEDs make set up a breeze.

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JL Audio RD900/5

Great / easy install!

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JL Audio RD900/5

Clean amplification when paired with a fix86 with my stock civic head unit.

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JL Audio RD900/5

such a breeze to set up..... stock speakers in the back deck and new 6.5's in the front doors..jl sub out back...WONDERFUL...SOUND !!!!

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Review

Quality Amp

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Perfect replacement Amp

Great replacement for my old XD 500/5. I can tell a big improvement. Plus, it's 2:3 the size.

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JL Audio RD900/5

Easy to install and tune. Super happy with it

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Excellent 5 Channel Amp

Easy Install. Great sound. Tuning process is a breeze.

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JL Audio = Top of the line!!

This amp is as advertised. Did NOT disappoint. It made my speakers come alive like promised. I can't tell you how happy I am to have this as the core of my system. Can't wait to add a sub and max it out!! Definitely would recommend this amp!!!

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JL Audio RD900/5

Very nice amp it made my JL 6.5 speakers and sub sound awesome

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Easy installation

Easy installation and sleek design. Versatile amp. I'm using this for 2 front speakers and the sub. With the clipping indicator gives me reassurance that I'm not exceeding its limits. Not 5 stars because I had to use a different Allen wrench than the provided one for a few screws.

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JL Audio RD900/5

This is running some Hertz Energy components and an Audiofrog 12" sub. My goal is sound quality rather than volume, but this can still play my system way louder than I want to listen to. I'm a big fan of the clip indicator lights and really like how easy the controls are to access from the face of the unit because it makes adjustments really easy. One of the issues with 5-channels is they often don't put out much power on the sub channel. One of the reasons this amp really appealed to me (other than being highly rated in listening reviews) is the 500 watts at 2 ohms. If you're looking for a 5-channel, def give this some consideration.

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Clean design and smooth sounding amplifier

So far so good, I was hesitant at buying any other amp other than JL. In the past I've owned Slash, and XD series amps and was always happy with the sound quality. I have only recently heard of the RD series amps. I'm driving Hertz Audio Coax all around and a Pioneer prefab sub box (10") in my 2016 Nissan Murano. The amp runs CLEAN and COOL. Very quiet turn on and turn off, excellent installation location for all adjustments and input wires. Simple and clean look which makes the amp even more astonishing. It reminds me of German Engineering for some reason. Give it a test drive, definitely very happy with my purchase. I was going to get the 400/4 but am really glad I spent the extra money and got the sub outputs. Signal sensing didn't work all that well, only detected my turn on a couple of times. Spoke with JL and they obviously recommended hardwired Remote. So I did and it all worked fine after that.

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Great power for the size!

This amp delivers enough power for a complete 4 satellites + 1 subwoofer. I've got it hooked up with JL C3 525 front, JL C2 525 back and a 10W3-D4 JL sub in the trunk on my 2017 Fiat 500. I have to say, the sound is crisp and clean on mids and highs. The lower bass lines and beats sound good, but sometimes it feels like missing more bass. The size is perfect if you have little room like i did. The looks is very sober, clean and elegant overall. The clipping setup is awesome! works perfectly. Overall a very good amp!

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engine noise ruins my entire experieince

After reading other reviews i must be the unlucky guy. In short the amp does everything it says it will do and i love the built in lights to help setup the amp properly to avoid clipping. My 2 star rating is completely based on the issue of engine noise that has proven impossible to resolve . I replaced my JL XD700 5v2 with this. So as you might guess it was pretty much plug and play. Same rca's, same power/ground wiring, NOT the same performance. I work at a Toyota Dealership and always have my gear professionally installed (work perks). they've gone through a number of different exercises to try to isolate and irradiate the engine noise to no avail. I'm so unhappy with this purchase. Its been explained to me by the Crutchfield tech support team that just because one amp worked fine with my existing setup doesn't mean another one will but i don't really understand how that doesn't point directly to a shortcoming of the new amp.

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JL Audio RD900/5

Absolutely love the amp. Upgraded all speakers with Rockford fosgate and added 12" sub. Wow!!! 2013 Jeep Wrangler unlimited with top off or on sounds incredible. Highly recommend.

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JL Audio RD900/5

A little bulky, but packs a powerful punch and sounds crisp and clean.

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Sounds Great

Ok I have had this amp hooked for about 2 days now and I am not disappointed! I do have a sound processor hooked up as well (kicker front row) but everything sounds loud and clear. The highs are crystal clear and the lows are not too bad either. It hits hard and does not use much power at all and does not get too hot. I would recommend this amp because it has more than enough power to run you entire system. 500 watts to the subs is more than enough me. So if you need more than that this might not be the amp for you.

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Loud and clear mids/highs sub channel so-so

Crystal clear on the mids and highs but the sub channel is a little underwhelming. I have it pushing two 10W1V3 4ohm subs and it pushes them ok, but not as well as the Rockford Prime 500/1 I was running on them with before.

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JL Audio RD900/5

Nice clean sound at all levels!

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Clarity at its best!

This is an awesome sounding amplifier, compact and powerfull

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JL Audio RD900/5

Was skeptical at JL's new amp lineup, but figured I'd roll the dice and see what happens. Ended up re-doing my amplifier setup in my Acura RSX. Went from a 4 channel & mono channel sub amps, down to a single 5 channel. My setup is JL XR 6.5" components, C2 6.5"s, 10W6V2, 4 gauge power wire and monster cable RCAs. The sizing of the amp is truly amazing of how things have progressed in the car audio world. This 5 channel is almost as big as the 4 channel that I replaced which was an audiophile, not a big name brand amp. First and foremost - the sound: Not sure if it was me, but this amp made my speakers come to life. Not only with power like my old setup, but clarity. If you are worried that this amp isn't going to good enough for your audiophile expectations - have no fear, this amp is great and at almost half the price of JL's more premium lineup. I would definitely recommend this amp to anyone, especially if you are on a tight budget. Don't let the RD series fool you, its't going to be tough to decipher between the XD/HD sound quality to the naked ear.

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JL Audio RD900/5

I put this 5 channel amp in a 2000 Toyota Tacoma ext cab. Also and new receiver, 2 front door speakers, 2 rear speakers, and 10" JL Audio Sub. This Amp made my system complete. After adjusting to the Amp to the perfect sound for me. Good highs and Mids and just the right amount of base. Everything sounds great even turned up to loud for my ears. I'm up in my 40s like listening to; ole and new country, classic rock, pop rock, even some new pop. I have sons between 18 and 22 yrs old and now they want a 5 channel amp instead of there Mono signal channel amp only pushing there subs. I have played with electronics for 30 yrs. and this is a sweet amp

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