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Planet Audio AC1200.4 at $99.99 With a Fit Check First

A four channel full range amp for $99.99 that can run speakers or subs. Check channel count, load and mounting space before you buy.

Planet Audio AC1200.4 4 Channel 1200 Output Full Range Car Amplifier
Planet Audio AC1200.4 4 Channel 1200 Output Full Range Car AmplifierAmazon

Price record

Live at Amazon

Price
$99.99
Typical price over 90 days
$117.01
Difference
$17.02 (15%)
Amazon rating
4.3 of 5 (619 reviews)
Checked
Sep 27, 2026, 7:00 AM EDT
Check the price at Amazon (opens Amazon in a new tab)

Disclosure. As an Amazon Associate, TunedDrive earns from qualifying purchases.

What you need to know before it goes in

This amp lives under a seat or in a trunk, and the size is the first real hurdle: 11 inches by 10 inches by 2.4 inches, at 7.23 pounds. Measure your spot before you spend anything, because a full range four channel amp that doesn't fit is no amp at all.

Planet Audio calls this a Class A/B design, which is the topology many four channel amps use. Class A/B runs current through the output devices on part of the signal cycle, and that usually means more heat and a bigger footprint than a Class D equivalent. In a compact car, we'd consider that tradeoff worth knowing up front.

Product detailValue to match to your vehicle
ProductPlanet Audio AC1200.4 4 Channel 1200 Output Full
ModelAC1200.4
ColorBlack
Size1200W

What it will not do

It will not turn a stock electrical system into a competition build. The ratings here are maximum figures, not verified continuous output, so we'd skip it if you're chasing big power for a heavy subwoofer setup.

It also will not fix a head unit that can't send a clean signal or speakers that are already damaged. This is a signal processor and amplifier, not a repair.

What it will not do

It works as an amplifier for speakers or subs, not as a fix for bad wiring or blown speakers.

Is $99.99 a good deal

Amazon price
$99.99
Customer rating
4.3
Customer reviews
619
Typical price over 90 days
$117.01
Difference
$17.02 (15 percent)

At $99.99, you're paying $17.02 less than the typical price over the last 90 days of $117.01, which is about 15 percent off. That's a real discount against the typical price over the last 90 days, not a claim about a different reference point.

With 619 reviews, this is a well-reviewed budget amp, and the 6 year parts and labor coverage is unusually long for this price range. If you want a four channel amp for a basic system, this is a sensible buy.

What to confirm about power and wiring

You'll need to match your speaker or subwoofer impedance to the amp's supported loads. Don't guess at this, because bridging two channels changes the load and the output behavior.

Check whether your head unit has RCA outputs or if you'll rely on the high level inputs. Also confirm you can run an appropriate power wire and ground, since this is a full range amp that needs a proper connection to work correctly.

Who should buy this and who should pass

This suits a driver building a modest four speaker system who wants the option to add a subwoofer later without swapping amps. The bridgeable design gives you that flexibility, and the variable low pass and fixed high pass crossovers give you useful tuning for both speakers and subs.

If you already have a strong subwoofer and need verified continuous power, or you're tight on mounting space, this isn't the amp for you. For a first system or a daily driver upgrade, it's a solid value at this price. Check your space and loads before checkout.

Specifications

ModelAC1200.4
ColorBlack
Size1200W