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

MK6925 2×250W Stereo Pre-amplifier


● 2 stereo outputs for 8Ω speaker
● 4 Mic inputs, Mic 3 & Mic 4 with phantom power 48V supply
● 3 stereo AUX inputs with volume adjustment and bass/treble control
● 1 AUX output for power extension
● 1 REC out of RCA for audio recording
● 7-band equalizer with convenient adjustment
● Built-in Echo, Delay, Repeat audio effects
● Easy selection for each Mic input and AUX input
● Power supply: AC220V/50Hz

  • Introduction
  • Specification

MK6925 amplifier integrates balancing function and pre amplifier and post amplifier. The series is equipped with three sets of stereo sound source input ports, four microphone input ports, a stereo line output ports, a recording output port and two groups of amplifier output terminals. Volume of three-way stereo sound source channels can be controlled independently cooperating with function of “choose 1 out of 4”. Volume of four microphones can be controlled independently. There is also a master volume control knob on the front panel. Equipped with seven equal sections, output volume is adjustable.

This product is more user-friendly designed. It adopts innovative technology and produces powerful, beautiful sound. Its functional operation is clear at a glance. At the same time, the product is designed for conference, sound volume is adjustable. Besides, it has multiple protection and enough function, stable and suitable for conference, background music, Karaoke, audio-visual and family engineering support.





Microphone input sensitivity

5 ± 0.5mV


Line input sensitivity

250 ± 50mV

MP3 input -10dB / 1KHZ sine wave

Output 23V

Output 32V

Output 45V

Line output voltage

950 ± 150mV

Total harmonic distortion

≤0.5 (1KHz, normal working conditions)

Line frequency response

20-20k Hz (± 3dB)

Microphone frequency response

80-20k Hz (± 3 dB)

Microphone 7 balanced

64HZ: ± 12dB

160HZ: ± 12dB

400HZ: ± 12dB

1KHZ: ± 12dB

2.5KHZ: ± 12dB

6.4KHZ: ± 12dB

15KHZ: ± 12dB

Line input and MP3 tone adjustment range bass

100Hz: ± 12dB


10KHz: ± 12dB

Signal to noise ratio (8Ω output)


Working power supply

AC220/ 50Hz

Phantom voltage

+ 48V

Rated power consumption

8Ω 60W

8Ω 120W


Protective function

Overload, over temperature, short circuit

Dimension (L × W × H)

483x 310x 88 mm

Package dimension (L × W × H)


Gross weight




Net weight




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  • Tel:+86 020 37166520
  • Address:Jianggao Town, Baiyun District, Guangzhou, China