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FREE 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:
Only 3 left in stock, order soon!
Arrives
Thursday, May 14
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)
Voltage: 14.4 Volts
Maximum Supply Voltage: 14.4 Volts (DC)
Minimum Supply Voltage: 14.4 Volts (DC)
Mounting Type: Surface Mount
Number of Channels: 4
Output Power: 55 Watts
Package Type Name: cardboard box
Item Dimensions: 11 x 11 x 5 inches
Manufacturer: Alpine
Model: S-A32F
Brand Name: Alpine
Global Trade Identification Number: 70, 63
UPC: 793276242570
Part Number: S-A32F
Item Type Name: 4 Channel Amplifier
Item Weight: 5.3 Grams
Included Components: 4 Channel Amplifier, Owners Manual
Unit Count: 1.0 Count
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, May 14
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
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
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
Great little amplifier wakes your speakers up and clarity is amazing
Reviewed in the United States on April 8, 2026 by Darrkon
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 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
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
I can't wait to Be Listening to Grammy-Award Winning 1999 Hit "Smooth" By Santana Feat. Rob Thomas of Matchbox Twenty
Reviewed in the United States on February 15, 2026 by Michael Cunningham
Honestly, it has more power than I expected. Great amp for the price. My ‘71 VW Bus rocks once again!
Reviewed in the United States on October 19, 2024 by Brooks J. Roberts