M-75.4AB // 420 Watts RMS 4-Channel Car Audio Amplifier (Used - Working)

$125.99 Regular price $179.99 Sale price

You Save 30% ($54.00)



The item was tested and it is working. There may be cosmetic damage, small scratches, dents, and/or damage to the gift box. If for some reason the item is not working, you have 30 days from the date of purchase to notify us. We will ask you to return the item (with the packaging received) back to us. Once we verify it is the item and it is not working, we will issue you a store credit only. If we discover the item is working, we will not issue a refund and will offer to return the item to your address at your cost.


Looking to go incognito? The CT Sounds M-75.4AB Limited Red Edition 4-Channel Car Audio Amplifier is proof it's not the size that matters, you get the power you want and save the space you need with this amplifier. Pumping out 420w RMS in a package small enough to fit just about anywhere. Pair this with the M-750.1D and you will be set for a full range of clean power without giving up the space needed for larger amplifiers.

The 4ch car amplifier is built with a MOSFET power supply, high-quality capacitors, advanced transformers, and cutting-edge inductors allowing for maximum current flow and power output making this amplifier extremely efficient. Furthermore, it is equipped with Korean capacitors which provide the amplifier with the ability to store more capacity and cover the capacity difference in applications where the amplifier draws more current than is available from the electrical system

Pure Class-AB amplifier, which ensures greater efficiency through both Class A’s & Class B’s individual operational productivity along with lower distortion.

Quick Facts:
RMS Power: 2Ω @ 12.8v 105 Watts x 4-Channels
RMS Power: 4Ω @ 12.8v 75 Watts x 4-Channels
RMS Power: 4Ω @ 12.8v  210 Watts x 2-Channels Bridged
Power & Ground Input Size: 4 Gauge
Speaker Input Size: 12 Gauge

Technical Specifications:

  1. No of channel: 4
  2. Frequency response (-3dB): 10Hz ~ 50kHz
  3. Gain adjustment: 0.2v ~ 5v
  4. Channel separation: 50dB
  5. Signal to noise ratio: 100dB
  6. Damping factor: 150
  7. Minimum speaker impedance: 2Ω (ohms)
  8. Low pass filter: 50~500Hz
  9. High pass filter: 500~5KHz
  10. Operating voltage (-ve ground): DC 12v


  • 143mm (W) x 43mm (H) x 280mm (L)


  1. It has bridgeable outputs
  2. TRI mode capable (for 3 speakers)
  3. MOSFET PWM (Pulse Width Modulated) power supply
  4. Soft turn on circuitry
  5. Thermal, DC offset, overload and speaker short protection inbuilt
  6. Nickel plated RCAs, thus low resistance inputs to the amp
  7. LED power and protection indicators
  8. This is a purely Class-AB amplifier, which ensures greater efficiency through both- Class A’s & Class B’s individual operational productivity along with lower distortion

Customer Reviews

No reviews yet