Guangzhou DSPPA Audio Co., Ltd.
Tel: 020-28346138
Fax: 020-81305947

MP120B 120W Mixer Amplifier with USB


● Built in USB player
● 4 microphones input, 2 auxiliary inputs and 1 line output
● Mic 1 input has the highest priority level muting function
● Individual volume control for all inputs
● Treble and Bass control
● Siren trigger when short circuit, overload or overheat is detected

  • Introduction
  • Specification
  • Connection

MP120B mixer amplifier has a wide range of output power ratings and enhanced cost-effectiveness with this model: 120W. The mixer amplifier is integrated with a USB player for MP3 playback. It is design to work with high impedance (100V) speaker system. The 5-segments LED output meter is to monitor the output signal level. It is standard 19” rack-mountable with earpieces provided and only takes up to 2U of space. This product can be called usb speaker amplifier, or a music mixer amplifier.







Output Regulation

Less than 3dB

Speaker Output


AUX Output


Input Sensitivity

Mic 1, 2, 3, 4 : 3mV (±0.5mV) Unbalanced

Line 1, 2 : 200mV (±30mV) Unbalanced

Frequency Response

65Hz – 20kHz (±3dB)


Less than 1% at 1kHz, 1/3 rated output voltage

S/N Ration

Mic 1, 2, 3, 4 : Bigger than 80dB

MP3 Input Sensitivity

230 – 280mV

Muting Function

Mic 1 overrides other input signals with 0 to -30dB attenuation


AC Fuse, DC Voltage, overload and short circuit

Power Requirement

AC 220-240V / 50-60Hz

Power Consumption



Dimension (W × H × D)

430 × 300 × 88mm (2U)

Net Weight

9 kg


Gross Weight

6 kg


MP120B 120W Mixer Amplifier with USB

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  • Address:Jianggao Town, Baiyun District, Guangzhou, China