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30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Tuesday, Mar 24
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Features
- Specifications: 4/3/2 Channel Power Amplifier. 55W RMS x 4 (4ohm, 14.4V 83dB (ref: 1W into 4 ohm), >98dB (ref: rated power into 4 ohm).
Item dimensions L x W x H: 11 x 11 x 5 inches
Voltage: 14.4 Volts
Manufacturer: Alpine
Maximum Supply Voltage: 14.4 Volts (DC)
Minimum Supply Voltage: 14.4 Volts (DC)
Item dimensions L x W x H: 11 x 11 x 5 inches
Voltage: 14.4 Volts
Manufacturer: Alpine
Maximum Supply Voltage: 14.4 Volts (DC)
Minimum Supply Voltage: 14.4 Volts (DC)
Mounting Type: Surface Mount
Brand: Alpine
Number of Channels: 4
Output Power: 80 Watts
Package Type Name: cardboard box
Global Trade Identification Number: 70, 63
UPC: 793276242570
Model: S-A32F
Item Weight: 0.187 ounces
Product Dimensions: 11 x 11 x 5 inches
Item model number: S-A32F
Manufacturer Part Number: S-A32F
Wattage: 160 watts
Date First Available: January 17, 2019
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Mar 24
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Learn more about financing & leasing here.
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Top Amazon Reviews
Alpine has always been my all-time favorite audio equipment! I added this amp to my 10.1 inch android auto head unit in standard cab, 1st gen tacoma. Mounted 6.5 infinity reference separates with baffle, into stock door holes. I have custom sub box with a mid grade 10" rockford fosgate behind driver seat and console. ABSOLUTELY AMAZING !! The sound is crystal clear and bass hit nice and sharp at all volume levels. I never moved gain controls from the half way position was shipped with, and. I have awesome sound!! Alpine always underrated!!! Yes, buy it!! Atleast when speaker are matched closely. Head unit is 47x4 watts I believe and produces great power with this amp added!!
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Reviewed in the United States on December 12, 2025 by Schoop
I couldn’t be happier with the Alpine S-A32F S-Series Amplifier. I’ve been upgrading my car audio system piece by piece, and this amp was the perfect addition. The sound is incredibly clean, powerful, and well-balanced across all channels. It brought my speakers to life in a way I honestly didn’t expect—zero distortion, even at high volumes. Installation was straightforward, and the compact design made it easy to fit in a tight space. I also love that it's a Class D amp, so it runs cooler and more efficiently than my old setup. This amp is perfect if you want serious sound quality without breaking the bank. Alpine really nailed it with this one—it delivers professional-level audio performance at a great price. Highly recommend it for anyone looking to elevate their car audio game!
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Reviewed in the United States on July 24, 2025 by Irene
I needed to replace an amplifier that died and I didn't want to skimp on quality; so when I saw this amplifier at a great price I didn't hesitate. First I am really happy with the build quality and aesthetics, my only disappointment is the wire terminals are just small set screws without a wire clamping system. I recommend terminating your wires with pin connectors. For the power and ground wires(8 gauge), I had to improvise pin connectors from larger gauge ring terminals. This improves and makes connections secure. I have been impressed by the sound. Punchy, deep bass, smooth mids and highs. Some of the improvement may be because the old amplifier was mounted under the rear deck on metal, which probably created a ground loop, and heat dissapation issues. I mounted this amp to the trunk liner with some plastic spacers underneath for airflow and wood backing behind the liner for reinforcement. This amp was about $90 less than the newest Alpine model, so this was an easy decision and I am cruising with great tunes again.
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Reviewed in the United States on May 22, 2025 by TRC719
I recommend this amplifier, it is very compact and the functions it brings are very good. It doesn't make any noise from the car's engine, the sound is very clear and powerful
Reviewed in the United States on June 28, 2025 by César Pérez
Unlike amplifiers rated at 10x the wattage, these put out more than they're advertised to offer AND do it without distorting the sound. I'm a HUGE audiophile. EVERYTHING I OWN has a good stereo in it. Hell, I have 3 HUGE stereos in my house! 1 upstairs, 1 downstairs and 1 on the screened in rear deck/sunroom. My vehicles are no different! I HAVE TO GUARANTEE that when someone pulls alongside of me "thumping" (C)rap, that I don't have to listen to their shit sounding stereo and in at least 2 of my vehicles, can force them to hear whatever I have on! Plus, I am often on the road between Tn & Pa and a LOUD, clean sounding stereo is a MUST! I literally never turn the things down, only UP! I LOVE my music, but it has to sound GREAT! I DETEST added distortion. This amp is in a small vehicle/beater so it need not be HUGE. It powers 4 Infinity KAPPA 6.5" speakers, both component speakers and you'd be amazed that all of that sound is coming out of such small speakers. I have a pair of small, under the front seat powered subs to round out the sound, and except for the lack of "air moving" large speakers, the sound quality is impressive! Alpine has been offering higher end car audio since before I began driving in '87, and I'm happy to see they STILL do! Buy this. You won't regret it! Kirk
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Reviewed in the United States on September 5, 2024 by Kirk
This amp sounds amazing. Absolutely amazing. Crutchfield told people that you couldn't have a 40A amplifier as that was too much draw on the battery. Their limit was 30A, but others who install radios say this is fine... just don't go over 100A... that's too much draw. So I haven't experienced any issues with the car since installing it but I have this turned up now to 18 out of 40 and it sounds amazing in the car and loud enough to pack a punch. Size is nice and compact and it was easy for me to install with secure connections using a hex wrench. So I'm very happy with this and will finish the mount this week. This one replaced a Sony 15A amplifier which worked fine, but this one is clearly just night and day between the two.
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Reviewed in the United States on February 7, 2026 by Lauren Glenn
Nice little four channel amp works really good and very simple to set
Reviewed in the United States on June 20, 2023 by Amazon Customer Amazon Customer
Compact, runs cool, very clean output. Can't say there was any noticeable sound quality differences from the Kenwood Class D I replaced, but this amp runs much much cooler, which was my main reason for replacement, my old amp would run dangerously hot for the carpeted space that I had it installed.. HPF works great, easy setup, terminals and controls clearly marked.
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Reviewed in the United States on March 31, 2025 by Scott Akonom