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Deal.ai › Hifonics

Hifonics

Hifonics A1200.4D ALPHA Series 4-Channel 1200W Max Class-D Full Range Car Amplifier

Hifonics A1200.4D ALPHA Series 4-Channel 1200W Max Class-D Full Range Car Amplifier

Best price now

$148.59at AmazonChecked 7 h ago

50% under what the other stores charge

Compared across 14 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Price facts

Lowest price today: $148.59 at Amazon (checked Nov 13, 2026).
Checked at 14 stores.

Our take on the Hifonics A1200.4D ALPHA Series 4-Channel 1200W Max Class-D Full Range Car Amplifier

The Hifonics A1200.4D is a compact Class-D four-channel car amplifier rated at 1200W max, with 4 x 150W at 4 ohms, 4 x 300W at 2 ohms and 2 x 600W bridged. It runs full range with variable high-pass and low-pass crossovers, a 0-12dB bass boost at 45Hz, and signal-sense auto turn-on. A 9.25-inch square footprint and 2.37-inch height make it easier to tuck under a seat or behind a panel than many full-size Class-AB amps. It suits drivers powering front and rear speakers or bridging to a sub, and it competes with budget Class-D four-channels on flexible crossovers rather than premium processing.

Best forPowering four speakers from one compact ampBridging two channels to a subwooferTight install spaces under a seat or behind trimBudget builds wanting flexible crossovers

Pros

Class-D design runs cooler and draws less current than Class-AB
Variable high-pass and low-pass crossovers on each pair of channels
Bridged 2 x 600W at 4 ohms for a subwoofer
Signal-sense auto turn-on works with factory head units
Compact 9.25 x 9.25 inch heatsink fits tight spaces
2-year warranty

Cons

1200W is a max rating; real output is 4 x 150W at 4 ohms
Bass boost is fixed at 45Hz, so it can sound boomy in some cars
No DSP or per-channel EQ beyond crossovers and bass boost
Needs a 50A fuse and stout wiring to deliver its rated power

Hifonics A1200.4D ALPHA Series 4-Channel 1200W Max Class-D Full Range Car Amplifier prices at every store

HifonicsNew
In stock
$300.00Checked 7 h ago
Visit Hifonics
TargetNew
In stock
$300.00Free shippingChecked 7 h ago
Visit Target
WalmartNew
In stockSold by Spreetail
$300.00Free shippingChecked 7 h ago
Visit Walmart
AmazonNew
Availability unknown
As an Amazon Associate, Deal.ai earns from qualifying purchases.
$148.59Free shippingChecked 7 h ago
Visit Amazon
eBayNew
Availability unknownSold by audiosavings
$148.59Checked 7 h ago
Visit eBay
AudiosavingsNew
Availability unknown
$148.59Checked 7 h ago
Visit Audiosavings
Designer-Motorsports.comNew
Availability unknown
$249.99Checked 7 h ago
Visit Designer-Motorsports.com
DBs Car AudioNew
Availability unknown
$299.99Checked 7 h ago
Visit DBs Car Audio
Newegg.comNew
Availability unknownSold by The Wires Zone
$300.00Checked 7 h ago
Visit Newegg.com
The Wires ZoneNew
Availability unknown
$300.00Checked 7 h ago
Visit The Wires Zone
Online Car StereoNew
Availability unknown
$300.00Checked 7 h ago
Visit Online Car Stereo
Lowe'sNew
Availability unknown
$300.00Checked 7 h ago
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vminnovations.comNew
Availability unknown
$300.00Checked 7 h ago
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Hour LoopNew
Availability unknown
$300.00Checked 7 h ago
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Hifonics A1200.4D ALPHA Series 4-Channel 1200W Max Class-D Full Range Car Amplifier price history

Lowest price we've seen: $148.59 on Nov 13 at eBay. Tracked across 14 stores since Nov 13.

What reviewers say

Owners of Hifonics ALPHA amps generally describe solid output for the size and good value, with the compact chassis and crossover range standing out. Common complaints center on optimistic power ratings and the fixed 45Hz bass boost.

What people mention

Power outputMixedOwners say it plays loud but note the 1200W figure is a max rating, not continuous power.
SizePraisedThe small square heatsink is easy to mount under seats or behind panels.
Bass boostCriticisedThe fixed 45Hz boost is called boomy by some and hard to tune out.
CrossoversPraisedThe wide variable high-pass and low-pass ranges are seen as useful for tuning speakers and subs.
HeatMixedIt runs cooler than Class-AB amps but still warms up under heavy load.

About the Hifonics A1200.4D ALPHA Series 4-Channel 1200W Max Class-D Full Range Car Amplifier

The Hifonics A1200.4D is a 4-channel car amplifier from the ALPHA Series. It uses Full Range Super D-Class topology and is rated at 1200 watts max.

It can run as four channels or as a bridged 2-channel amp. The Accu-Cross variable high-pass and low-pass crossovers and a variable bass boost (0-12dB at 45Hz) let you shape the sound. Ultra-Fi MOSFET output devices and a Twin Turbo Coil PS power supply handle the output, with 300KHz high-speed pulsing.

The preamplifier circuit is low-noise and has nickel-plated RCA inputs. An LED indicator shows system protection status.

Max power: 1200W
Channels: 4
Class: D (Full Range Super D-Class)
Power at 4 ohms: 4 x 150W
Power at 2 ohms: 4 x 300W
Bridged at 4 ohms: 2 x 600W
Frequency response: 10Hz-45kHz
THD: <0.05%
S/N ratio: >85dB
High-pass crossover: Variable, 20Hz-4kHz
Low-pass crossover: Variable, 50Hz-4kHz
Bass boost: 0-12dB at 45Hz
Input sensitivity: 0.2-10V
Inputs: Nickel-plated RCA
Fuse rating

Questions and answers

Is 1200W real power?: No. 1200W is the max rating. Rated output is 4 x 150W at 4 ohms, 4 x 300W at 2 ohms, or 2 x 600W bridged at 4 ohms.
Can it run front speakers and a sub?: Yes. Use two channels for front speakers and bridge the other two to a 4-ohm subwoofer for 600W.
Does it need a remote turn-on wire?: No. Signal-sense auto turn-on powers the amp when it detects audio input, which helps with factory head units.
What fuse and wiring does it need?: It uses a 50A fuse. Use power and ground cable rated for that current and keep runs short.
Can I adjust the bass?: Yes, with a variable 0-12dB boost at 45Hz. There is no full EQ, only crossovers and the boost.
How big is it?: The heatsink measures 9.25 inches long, 9.25 inches deep and 2.37 inches high.
Where is the Hifonics A1200.4D ALPHA Series 4-Channel 1200W Max Class-D Full Range Car Amplifier cheapest?: At Amazon, for $148.59, 50% under what the other stores charge, as of our latest check.
Where can I buy the Hifonics A1200.4D ALPHA Series 4-Channel 1200W Max Class-D Full Range Car Amplifier?: 14 stores we checked sell it, including Amazon, eBay, Audiosavings, Designer-Motorsports.com, DBs Car Audio.

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Stores we've priced the Hifonics A1200.4D ALPHA Series 4-Channel 1200W Max Class-D Full Range Car Amplifier at

Audiosavings deals and prices
Designer-Motorsports.com deals and prices
Hour Loop deals and prices
Lowe's deals and prices
Newegg deals and prices

50A

Heatsink size

9.25" L x 9.25" D x 2.37" H

Turn-on

Auto turn-on (signal sense)

Warranty

2 years

Target deals and prices

vminnovations.com deals and prices

Walmart deals and prices

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