Audio Apex CAB-45 Car Amplifier Monoblock 4500 Watts RMS

Car Audio Bargain (CAB)
$859.99 $599.99
(You save $260.00 )
(43 reviews)
20.00 LBS
22.50 (in)
9.00 (in)
2.25 (in)
Free Shipping
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CAB-45 Amplifier 

The CAB-45 amplifier is one of the BEST bang for the buck in car audio right now. The CAB-45 is a half bridge designed monoblock class D amplifier capable of making 4500 watts RMS @1 ohm. The CAB-45 also comes with a bass knob which features a clip light.

Be sure to check out the video below, in the amp test done by Sundown Audio Unofficial. The CAB-45 put out over 4900 watts RMS at 1 ohm on the amp dyno. The CAB-45 will be strappable with the new optional bridging module. (9000w at 1 ch at 2 ohms) (Requires 2 amps and input bridging module)  *** as of June 23rd, 2021 the bridging modules are still in production. You will need to run gain matched until module is available.

 Operational Voltage: 9.0-16.0v

Power: 4500w RMS @ 1 ohm at 14.4v

Power: 2750w RMS @ 2 ohm at 14.4v

Power: 1500w RMS @ 4 ohm at 14.4v

Frequency Response: 17Hz-180Hz (-3dB)

Signal Noise Ratio: 90dB

Input Sensitivity: 20,000 Ohms

Input Sensitivity: 100MV-6V

T.H.D. : <0.05%

Bass Frequency: 30Hz-80Hz

Low Pass Frequency: 40Hz-80Hz

Subsonic: OFF-50Hz

Bass Boost: 0-12dB



Your CAB-45 has several different warranty options available. To keep the price as low as possible, the base amplifier carries a 90 warranty against manufacturers defects only. This warranty does not cover damage done to amplifiers from miswiring, blown speakers, low voltage, and other user errors that cause burned transistors. The premiere warranty tier (79.99) covers practically all forms of damage done to the amplifier for 2 years. This premium warranty also has a graduated deductible associated with user error failures to avoid intentional misuse of the policy. In the first 12 months, the first use has a 0.00 deductible, the second use has a 50.00 deductible, the third use will have a 100.00 deductible. the 4th and all subsequent uses will have a 150.00 deductible. If the first use is in the second year, the deductibles start at 50.00 instead of 0.00. This warranty is non transferable, and is only valid for the original purchaser.


  • 5
    Nasty amp

    Posted by Joshua Kemp on 28th Apr 2022

    Best amp yet. Pushes tons of power

  • 5

    Posted by Brent Steedley on 25th Apr 2022

    This is my 3rd amp I had the 1600.1 the cab22 and now cab 45 with all 3 amp I was surprised at what they do can't wait to see what's coming out next

  • 5

    Posted by Randall Carnahan on 15th Apr 2022

    This time the cab45 is doing well. Definitely a good amp.

  • 5
    Grabbed my second to complete my build.

    Posted by James Kugel on 18th Mar 2022

    Got 1 2 on 2 zv5 hybrids apex for the win

  • 5
    Awesome amp

    Posted by John Cameron on 3rd Mar 2022

    This amp goes above and beyond my expectations and I’m truly impressed

  • 5
    It's a beast

    Posted by Bryton greenwell on 24th Feb 2022

    It's a hell of an amp for its size.

  • 5
    Cab 45

    Posted by Antoine Caldwell on 19th Feb 2022

    Best amp ever. Running on 3 sa v2 12s. Pushing them with ease

  • 4

    Posted by Claude Matthews on 16th Feb 2022

    The amp is great but the only issue I have is that I have too request sending my amp too my house rather then picking it at a meeting point

  • 5
    Great powerful amp

    Posted by Joshua Kemp on 14th Feb 2022

    So amp is badass, only complaint the bassnob im guessing scratched the top heatsink but its so small you really have to look for it. Didn't know this amp requires a second battery which isnt known until you read the manual. For the price its a beast and a great purchase