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MA3925 2×250W Stereo Pre-amplifier
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  • MA3925
  • MA3925 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

Description

MA3925 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.

Features:

● 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


Specification

Model

MA3925

Microphone input sensitivity

5 ± 0.5mV

Line input sensitivity

250 ± 50mV

MP3 input -10dB / 1KHZ sine wave

Output 23V

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

Treble

10KHz: ± 12dB

Signal to noise ratio (8Ω output)

≥75dB

Working power supply

AC220-240V / 50Hz

Phantom voltage

+ 48V

Rated power consumption

8Ω 250W

Protective function

Overload, over temperature, short circuit

Dimension (L × W × H)

483x 310x 88 mm

Dimension (L × W × H)

520mm×395mm×170mm

Gross weight

9.5kg

Net weight

7.5kg


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