Alpine R-A90S
Kenneth from Summerville, SC on 7/9/2025
2017 Jeep Wrangler Unlimited
Great amp, really helped the sound coming out my speakers to be clearer.
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0 of 0 found this helpful
Awesome all around!
Arlot from Gladstone, OR on 5/12/2025
2014 Toyota Tundra
Love Alpine products! Crutchfield makes it super easy to compare product features and grab everything you need to install. Their system makes sure you have everything that is needed by suggesting all components needed for an install from scratch. Everything is packaged well and ships quickly! Information for tech support if you need it is super easy to find. Would definitely recommend Crutchfield for any of your audio needs. Whether you're a novice or a professional installer.
Pros: Super easy ordering, quick shipping, well packaged!
Cons:
0 of 0 found this helpful
All channels ??
Arthur from Brookfield, IL on 12/30/2024
2016 Chevrolet Silverado 1500
1 of 1 found this helpful
Great Customer Service.
Donald from Montevallo, AL on 8/13/2024
Received my amp very quickly and it performs like it should. Thank you Crutchfield!
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1 of 1 found this helpful
Awesome Amp
Ricky from Estill Springs, TN on 6/25/2024
2019 Ram 1500
Very powerful amp, installed in my boat in a dry locker, pushing 4 Kicker 6.5's (75w x4), and 2 Kicker 8" (150w x 2), and it doesn't get too hot, although I do keep an external fan on it. Highly recommend for a staggered setup.
Pros: Can be mounted either way, then add the logo, brilliant. Does not get super hot like some amps, that you could literally fry an egg on.
Cons: None
2 of 2 found this helpful
Clarity and Power = Beautiful Music!
Robb from No Thank You on 5/20/2024
2021 Kia Soul
Does Not Disappoint! Worth every dollar. Make sure to have a 4-volt input signal at a minimum and you will be happy as a clam.... Alpine = Two Thumbs UP!
Pros: Small Footprint, Exceptional Quality.
Cons: Do Not Use a Two-volt Input.
3 of 3 found this helpful
Alpine R-A90S
Mark from Redding, CA on 4/13/2024
2006 Dodge Ram 2500
Awesome amp for the money with very clean sound. Once you get everything adjusted this amp shines. Thanks Crutchfield.
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3 of 3 found this helpful
Easy and simple
Andrew from Shelton, WA on 3/13/2024
2015 Ford F-350
Easy to install nice to be able to have front rear and subwoofer in one amp. Sounds great in my 2015 f350 super crew cab
Pros: One amp for door speakers and subs. The bass knob really woke up the subs
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1 of 3 found this helpful
Alpine R-A90S
Jeff from Tulsa, OK on 1/11/2024
2018 Toyota 4Runner
1 of 2 found this helpful
Alpine R series Amp R-A90S
Todd from Haslet, TX on 8/27/2023
1999 Toyota Land Cruiser
So far great! Perfect. As I would expect from Alpine R series. Very flexible, and easy to configure.
Pros: Easy to install
Cons: None, maybe costs
1 of 2 found this helpful
Alpine R-A90S
Joseph from Wilmington, NC on 12/24/2022
2008 Lexus IS350
Solid amp for a full car upgrade
Pros: Small footprint
Cons: Not 2 ohm stable for sub bridge but just get the right Dvc or single voice coil configuration
3 of 6 found this helpful
Durand
Kurt from Durand on 12/10/2021
I wasted so much time chasing what I thought was a bad ground, only to find out that the amp going into protect mode was due to over-voltage sensitivity of the high level input circuit. I was feeding the speaker wires from a 2016 Ford Fusion head unit direct into the amp with the hi level circuit selected. It wasn't until I finally consulted with Alpine, and they told me an LOC was required. What's the point of having high level inputs (rated at 10V) if they can't handle a wimpy stock radio signal? BTW, I ended up using an Audio Control LC7i, and it did the trick.
Pros: Easy install Nice quality weight and feel
Cons: Can't handle line level inputs as advertised.
7 of 11 found this helpful
Good all-around amp
Crutchfield customer from Rogers, AR on 9/12/2021
2015 Jeep Wrangler Unlimited
Nice to be able to add a couple speakers to my existing stereo and push more power to all 6.
Pros: Nice features
Cons:
2 of 6 found this helpful
Alpine R-A90S
Crutchfield customer from Glendale, AZ on 7/2/2021
1993 Ford F Series
0 of 4 found this helpful
Incredible and versatile amp.
Cheapskate from PA on 10/15/2020
2014 Toyota Tacoma
This amp offers so much value and versatility that few other six channel amps can match. Here are some highlights for me. 1. Channels 5 and 6 put out twice the watts as channels 1-4. I cannot overstate how awesome this is. The extra power is fantastic for midbass drivers if you are running 3-way active or great if you are bridging it to run a subwoofer (500 watts RMS @ 4 ohms) in 3 or 5 channel mode. 2. Bandpass filtering. I don't have a DSP or high end head unit so I have no way to run a bandpass filter. But thanks to this amp, I can run an active two way component setup and attenuate the tweeters since higher frequencies tend to sound harsh/painful to my ears. This amp lets me run 80-4000hz to the woofers, 4000+ hz to the tweeters and 80hz and below to the subwoofer. The vast majority of other multi-channel amps only have high and low pass filters up to 500hz or so. 3. Fits under the driver seat of my Tacoma. 4. Underrated output. My birth sheet says says 118w @ 2 ohms for channels 1-4 and 272w @ 2 ohms for channels 5-6. 5. Bought a scratch and dent model and it looks brand spanking new. 6. My 8 inch JL Audio Microsub sounds great with this amp. 7. Amp has a very solid build quality and feel. Alpine is not some flea market brand. I could not be happier with this purchase and cannot wait to get better speakers for it.
Pros: Plenty if power for virtually all applications. Bandpass filtering. Crossover frequencies adjustable beyond 500hz unlike most amps these days.
Cons: Only does 4 ohms bridged on any of the channels.
53 of 57 found this helpful
