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Product description

Product Highlights

Enhanced Bluetooth Connectivity

Bluetooth 5.0 Support: The amplifier features Bluetooth 5.0 for stable and high-quality audio transmission, ensuring seamless wireless streaming.

Easy Input Switching

Toggle Input Selection: Users can easily switch between Bluetooth, U-Disk, and RCA inputs with a simple toggle, providing convenience and flexibility in choosing the audio source.

Customizable Volume Control

4-Channel Volume Control: Each output channel has its own independent volume control, allowing for precise audio adjustment tailored to individual preferences.

Versatile Audio Configuration

Switchable CH3 and CH4: The ability to switch between a 4-CH amplifier and a multi-room music system using CH3 and CH4, offering a dynamic audio setup for different environments.

Panel Introduction

Using Guide

Parameters

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 Channel: 2.0 / 4.0 Speaker impedance: 4-8Ω Max output power: 50W*4 (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 Weight: Net: 540g / 1.19lb; Package: 1100g / 2.43lb Packing list: 1*M4 Amplifier; 1*24V/4.5A Power Supply; 1 Set*Raw Cable Speaker Jacks; 1*Bluetooth Antenna; 1*Manual

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Customer Reviews

4.2 out of 5 stars 349

4.4 out of 5 stars 661

4.4 out of 5 stars 396

4.0 out of 5 stars 469

4.3 out of 5 stars 13

4.3 out of 5 stars 1,673

Price

$70.00$70.00 $79.99$79.99 $104.49$104.49 $149.99$149.99 $116.99$116.99 $28.99$28.99

Type
Bluetooth Amplifier Bluetooth Amplifier Bluetooth Amplifier Bluetooth Amplifier Digital Amplifier Bluetooth Amplifier

Max Power
50 watts x4 160 watts x2 100 watts x2 160 watts x2 300 watts x2 50 watts x2

Channel
2.0/4.0 2.0(2.1) 2.0(2.1) 2.0(2.1) 2.0(2.1) 2.0

Input
Bluetooth 5.0 + RCA + 3.5mm AUX + U-disk Bluetooth 5.0 + RCA + U-disk Bluetooth/RCA/USB/OPT .etc Bluetooth 5.0 + RCA + MM Phono single-ended RCA / balanced XLR Bluetooth 5.0 + 3.5mm AUX + USB

Output
4 Passive Speakers / 2 Passive Speakers + Another M4 Amp Stereo Passive Speakers + Active SUB Stereo Passive Speakers + Active SUB Stereo Passive Speakers + Active SUB Stereo Passive Speakers + Active SUB Stereo Passive Speakers

Tone Control
4-CH Independent VOL Control Bass & Treble Control Bass & Treble Control Bass & Treble Control Balance Control no data

THD
≤0.05% ≤0.04% 0.07% ≤0.5% 0.008% ≤0.04%

SNR
≥98dB ≥98dB ≥98dB >90dB ≥110dB ≥98dB

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

Feature
Multi-Channel Cost Effective; High Power Vacuum Tube; VU Meter; Remote Control Phono Amp; Vacuum Tube High Power; Vu Meter Super Mini Size; PC Sound Card

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Customer Reviews

—

4.2 out of 5 stars 59

4.4 out of 5 stars 322

4.2 out of 5 stars 397

4.1 out of 5 stars 97

4.2 out of 5 stars 449

Price

— no data
$59.99$59.99 $69.99$69.99 $65.69$65.69 $129.99$129.99 $129.99$129.99

Type
2 Pack 50 Watts Bass Shaker Bluetooth USB Gaming DAC & Headphone Amp GE5654 Vacuum Tube MM Phono Preamp & Headphone Amp TPA3255 300 watts Subwoofer & Mono Channel Amplifier 7-Band Vacuum Tube XLR Balanced EQ Preamp 2-Way Amplifier/Speaker Switch with VU Meter & Remote Control

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