4 Channel Bluetooth Amplifier, 50W x 4 Audio Power Amp, Hi-Fi Home Stereo Speaker Receiver [Douk Audio M4]

Price: $79.99
(as of May 23,2023 00:43:35 UTC – Details)

Product Description

Support Bluetooth 5.0 input for better transmission stability and quality

With a toggle to switch among Bluetooth / U-Disk / RCA inputs

4 independent volume control for each output channel

CH3 and CH4 can be switched to achieve 4-CH amplifier / multi-room music system

Packing List 1*M4 Amplifier 1*24V/4.5A Power Supply 1 Set*Raw Cable Speaker Jacks 1*Bluetooth Antenna 1*Manual

Douk Audio M4

Parameters

Channel: 2.0 / 4.0Bluetooth version: 5.0Speaker impedance: 4-8ΩMax output power: 50W*4 (4Ω load)SNR: ≥98dBInput sensitivity: 0.775VTHD: 0.05%(1kHz 1W)Frequency Response: 20Hz-20KHz(±3dB)Working voltage: DC 12-24V
Model: Douk Audio M4 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 Dimensions(W*D*H): 128*134*33mm / 5.04*5.28*1.30in Net weight: 540g / 1.19lb Package weight: 1100g / 2.43lb

Panel Introduction

Using Guide

Type
Bluetooth Amplifier Bluetooth Amplifier Bluetooth Amplifier Bluetooth Amplifier Bluetooth Amplifier Bluetooth Amplifier

Max Power
50W x 4 50W x 2 + 100W SUB 50W x 5 + 100W SUB 45W x 4 50W x 2 50W x 2

Channel
2.0/4.0 2.1 (2.2) 5.1 4.0 2 2.0

Input
Bluetooth 5.0 + RCA + 3.5mm AUX + U-disk Bluetooth 5.0 + RCA + U-disk 3 RCA Bluetooth + RCA + U-Disk + SD + FM Bluetooth 5.0 + 3.5mm AUX Bluetooth 5.0 + 3.5mm AUX + USB

Output
4 Passive Speakers / 2 Passive Speakers + Another M4 Amp Stereo Passive Speakers + Passive & Active Subwoofer 5 Passive Speakers + Passive Subwoofer 4 Passive Speakers Stereo Passive Speakers Stereo Passive Speakers

Tone Control

✓

✓

✓

✓

THD
≤0.05% ≤0.05% ≤0.04% ≤0.04% ≤0.04% ≤0.04%

SNR
≥98dB ≥98dB ≥98dB ≥80dB ≥98dB ≥98dB

Speaker Impedance
4~8ohm 4~8ohm 4~8ohm 4~8ohm 2~8ohm 4~8ohm

Power Supply
24V 4.5A 24V 4.5A 19V 4.74A 12V 5A 19V 4.74A 12V 5A

Type
Bluetooth Tube Preamp & Headphone Amplifier Bluetooth Tube MM Phono Amplifier (320W) Subwoofer / Mono Channel Amplifier (100W) MM Phono Vacuum Tube Preamplifier 4(1)-IN-1(4)-OUT 3.5mm AUX Audio Switch IPS Nixie Tube Clock

Supporting wired 2 groups of stereo RCA and wireless Bluetooth 5.0 input, compatible with most common audio device such as phones, computers, TVs, MP3, TV, CD players etc. With U-disk input, it can be used as a digital music player, supporting MP3, WAV, APE, FLAC and WMA lossless formats.
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.
Reasonable circuit layout, concise wiring and high-quality components to ensure HiFi clear sound and long time stable work. Separate design of small and large signal circuit for better circuit protection. Bluetooth 5.0 version with high-gain antenna, ensure more stable and faster transmission.
Propersize with exquisite appearance, aluminum alloy case is CNC machined and with anodizing process, more fashionable and durable, very suitable for home, office and desktop audio system use.