HiFi Bluetooth 5.0 Digital Power Amplifier Stereo 2/4 Channel Audio Amp 50W x 4
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| Voltage | 24 Volts |
| Manufacturer | Douk Audio |
| Brand | Douk Audio |
| Number of Channels | 4 |
- 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. Unique Bluetooth design without any external antenna, very practical and beautiful.
- 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.
Product Description
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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*Manual
Douk Audio M4
Parameters
- Channel: 2.0 / 4.0
- Bluetooth version: 5.0
- 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
- 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
 |  |  |  |  |  | |
|---|---|---|---|---|---|---|
| Douk Audio M4 | Douk Audio M3 | Nobsound TPA3116-5.1 | LP-269S | Douk Audio G3 | Nobsound NS-01G PRO | |
| 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 |
 |  |  |  |  |  | |
|---|---|---|---|---|---|---|
| Douk Audio P1 | Douk Audio X1 | Nobsound G2 | Little Bear T7 | Little Bear MC104 PRO | Douk Audio EleksTube | |
| 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 |
Specifications for this item
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