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Alpine

Alpine S-A32F, S Series Class D 4 Channel Digital Amplifier, 320 Watts

  • Based on 441 reviews
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Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Oct 14
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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).

Description

Alpine introduces the all-new s-series amplifiers - a perfect match to the s-series speakers. These amps have an excellent watts-per-euro ratio in the Class-D category, feature a very high heat resistance and won’t shut down due to overheating. They also feature excellent sound quality in their price range.

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_of_direct_current


Minimum Supply Voltage: 14.4 volts_of_direct_current


Voltage: 14.4 volts


Maximum Supply Voltage: 14.4 volts_of_direct_current


Minimum Supply Voltage: 14.4 volts_of_direct_current


Mounting Type: Surface Mount


Number of Channels: 4


Output Power: 55 watts


Package Type Name: cardboard box


Maximum Output Power: 320 watts


Item Dimensions: 11 x 11 x 5 inches


Manufacturer: Alpine


Model: S-A32F


Brand Name: Alpine


Number of Items: 1


Unit Count: 1 Count


Global Trade Identification Number: 70, 63


UPC: 793276242570


Included Components: 4 Channel Amplifier, Owners Manual


Item Type Name: 4 Channel Amplifier


Item Weight: 5.3 g


Part Number: S-A32F


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Oct 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.

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Top Amazon Reviews

    • Exactly what you need
Best amp in its class, at a reasonable price this amp makes no noise when cranked up, its compact. The sound quality is excellent, as well as the build quality. Small, durable, aesthetically pleasing. You can’t go wrong. I’ve beaten and abused this amp and it’s never overheated even once or gone into protect. I’ll never buy a different one ... show more
Reviewed in the United States on June 25, 2026 by Caden
    • Just such a nice and clean sound... perfect for a long road trip... mine is in 3 weeks from now
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. ... show more
Reviewed in the United States on February 7, 2026 by Lauren Glenn
    • Crystal-Clear Sound and Power You Can Feel!
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! ... show more
Reviewed in the United States on July 24, 2025 by Irene
    • CLEAN power
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 ... show more
Reviewed in the United States on September 5, 2024 by Kirk
    • Amplifier for your subwoofer.
Good quality and good price.
Reviewed in the United States on September 21, 2026 by vitctor lara
    • You can’t not have an amp!
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
    • Perfect for midrange smaller setups
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!! ... show more
Reviewed in the United States on December 12, 2025 by Schoop
    • Alpine quality for a great price.
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. ... show more
Reviewed in the United States on May 22, 2025 by TRC719

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