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Compact black four-channel amplifier with LED display, USB, SD, microphone input and remote control

4 Channel Bluetooth 5.0 Stereo Amplifier 50Wx4 1200W Max USB SD FM Class D Car Amplifier

SKU CH-8ABG-RZEQN

Four-channel Class D amplifier delivers 50 W per channel into 4–8 Ω speakers with Bluetooth 5.0 streaming up to 33 feet, plus USB, SD, AUX, FM and microphone inputs

  • Amplifier channels4 Channels
  • Bridged power400 W x 1 @ 4 ohms
  • Package contents4 CH Amplifier, Power Adapter, Remote control, Antenna Cable
  • Box volume6.9088 L x 21.6916 W x 27.1018 H centimeters
  • Key featuresStereo
  • Product colorBlack
  • Bluetooth 5.0 streams audio up to 33 feet wirelessly
  • 50W × 4 channels RMS drives four passive speakers cleanly
  • 04% harmonic distortion keeps music pure at any volume
  • USB, SD, AUX and FM inputs plus microphone jack cover every source
  • 400W bridged mono mode powers a single subwoofer or large speaker

4-Channel Bluetooth 5.0 Amplifier

This 4-channel Class D stereo amplifier delivers 50W RMS per channel into 4-8 ohm passive speakers. It suits home audio, TV sound, karaoke and small-party setups where a compact, all-in-one receiver is preferred. Bluetooth 5.0, USB, micro SD, 3.5 mm AUX, FM radio and a microphone input are built in. A remote control and power adapter are included.

Practical Limits of Bluetooth 5.0

Bluetooth 5.0 provides a typical operating range of 33 feet, so walls or interference can reduce reliable streaming distance. The analogue AUX input accepts a 3.5 mm source but adds no digital processing. FM reception quality depends entirely on local signal strength and the supplied antenna cable. Total harmonic distortion is rated at 0.04 % and signal-to-noise ratio exceeds 80 dB, setting the noise floor for quiet passages.

Installation and Common Issues

Connect the included power adapter, wire four passive speakers to the spring terminals, pair a phone via Bluetooth 5.0 or plug in a 3.5 mm source, then select the input on the front panel or remote. The LED display shows mode and volume. Common problems: loose speaker wires triggering protection mode, Bluetooth pairing drops beyond 33 feet, FM static in weak-signal areas, and microphone feedback if gain is set too high.

How it compares

Measured against everything we stock in Car Audio Amplifiers, at today’s prices. Recalculated every night.

Price $54.99
Cheaper than about 85% of the 158 comparable items (median $225.49).

Specifications

Product
Model name4.0 CH With FM
Part number288
Product colorBlack
Audio & video
Amplifier channels4 Channels
Power
Bridged power400 W x 1 @ 4 ohms
In the box
Package contents4 CH Amplifier, Power Adapter, Remote control, Antenna Cable, User Manual
Box volume6.9088 L x 21.6916 W x 27.1018 H centimeters

Questions about this item

Should I pick the 4.0 CH version with FM or a different channel configuration?

The 4.0 CH model includes FM radio and drives four passive speakers at 50W each, making it the right choice for a four-speaker home or car setup.

What does the 1200W peak rating actually deliver when I connect my speakers?

The 1200W figure is maximum music output power; continuous RMS power is 50W per channel into 4-8 ohm speakers with 0.04% distortion.

How far does the Bluetooth 5.0 connection reach and what audio sources does it support?

Bluetooth 5.0 works up to 33 feet and pairs with phones, tablets or PCs; you can also use USB, micro SD, 3.5mm AUX or the built-in FM tuner.

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