Douk Audio M4 HiFi Bluetooth 5.0 digital amplifier 4X50W

Model Number
Douk Audio M4 HiFi Bluetooth 5.0 Digital Amplifier Stereo 4 Channel

– Channel: 2.0 / 4.0
– Audio input: Bluetooth/Stereo RCA/U-disk
– Audio output: speaker sockets
– U-disk support format: MP3, WMA, APE, FLAC, WAV
– U-disk capacity: max 32G
– Bluetooth version: 5.0
– Speaker impedance: 4-8Ω
– Max output power: 4X50W (4Ω load)
– SNR: ≥98dB
– Input sensitivity: 0.775V
– THD: 0.05%(1kHz 1W)
– Frequency Response: 20Hz-20KHz(±3dB)
– Working voltage: DC 12-24V
– Dimensions(W*D*H): 128*134*33mm / 5.04*5.28*1.30in
– Net weight: 533g / 1.18lb
– Package weight: 1100g / 2.43lb

Packing List

– 1X M4 Amplifier
– 1X 24V/4.5A Power Supply
– 1X Set Raw Cable Speaker Jacks
– 1X Manual

Features

One group of stereo RCA (CH3 and CH4) can be used as audio input or output by switching the selector, to acheive different demands:

– CH3/CH4 as audio output: 4 groups of speaker sockets can connect to 2 pair of speakers. Besides connect to active speakers, CH3/CH4 also can connect to another M4 amplifier to connect more speakers,
in this way multiple amplifiers and multiple speakers can be connected in turn, to achieve one audio signal be shared in several rooms.

– CH3/CH4 as audio input: one input corresponds to one output (ex. CH1 speaker socket will output the audio signal that CH1 inputs),
which means that two groups of stereo audio signal (or 4 groups of mono audio signal) can be input at the same time.

– With 4 groups of speaker sockets output, they can output at the same time and each channel with independent volume control.
Its max output power can reach 50W×4, and equipped with high-quality 24V/4.5A power supply, enough to drive most home speakers.