MA2B Mini Digital Amplifier

Mini Amplifier (Class D) with Mic Mixer 2 x 20 watts @ 4Ohm, Volume/bass/treble adjustable separately, 1 x 40 watt @ 8Ohm bridged output, Dual Mono output, Line level output, Front button RS232 & IR Control

MA2B is a digital amplifier(Class-D) with 2 line & 1 MIC inputs, it supports EQ control and MIC mix. With 2x20W@4Ohm as default output, it can be switched to 1x40W@8Ohm by bridge connection. It provides a good solution for classroom, small meeting room, lecture hall, bar, pub etc.


Reference: MA2B

Manufacturer: CleanDigital


DatasheetUser Manual


2 switchable analog audio inputs.l One 3-level MIC input with mixer function.

Output at 2×20 Watts @ 4ohm, or bridge connection at 1x40Watt@8Ohm.

Loop output to cascade to another MA2B

Selectable with stereo or dual mono audio.

Bass, treble & volume adjustable.

Locking power supply.

Controllable via button & RS232 (Optional IR via IR-MA2B).


Audio Input 2 stereo (RCA, 3.5mm jack), >10KΩ;
1 MIC (captive screw connector);
Audio Output 1 amplifier (Captive screw connector), 4~8Ω; 1 stereo (3.5mm jack); 50Ω;
Voltage Gain 32 dB
Power Output 2×20 Watts (4 Ohms)
Frequency Response 20Hz ~ 20KHz
CMRR >70dB@20Hz~20KHz
SNR 80dB at maximum output
Stereo Channel Separation >75dB@20Hz to 20KHz
Bandwidth 20Hz ~ 25KHz
THD + Noise 1%@1KHz, 0.3%@20KHz at nominal level
Control Buttons, RS232 (captive screw connector), Optional IR control
Power Supply 24V DC;
Chassis Dimension W96 x H38 x D87mm
Weight 0.3Kg