4 Channel Bluetooth Amplifier, 50W x 4 Audio Power Amp, Hi-Fi Home Stereo Speaker Receiver [Douk Audio M4]
Condition: New
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Availability:
In Stock.
Arrives
Monday, Nov 3
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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
- 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 50W4, 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.
Voltage: 24 Volts (DC)
Manufacturer: Douk Audio
Maximum Supply Voltage: 24 Volts (DC)
Minimum Supply Voltage: 12 Volts (DC)
Mounting Type: Surface Mount
Voltage: 24 Volts (DC)
Manufacturer: Douk Audio
Maximum Supply Voltage: 24 Volts (DC)
Minimum Supply Voltage: 12 Volts (DC)
Mounting Type: Surface Mount
Brand: Douk Audio
Number of Channels: 4
Output Power: 200 Watts
Specification Met: CE, FCC
Supply Current: 4.5 Amps
Material: Aluminum
Package Dimensions: 11.61 x 9.13 x 2.52 inches
Item Weight: 2.42 pounds
Item model number: SUC-M4
Date First Available: April 16, 2020
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Nov 3
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
The media could not be loaded. This is a great 4 channel amp. Have installed 2 at my son's who moved in to a house w/ 3 sets of built in stereo speakers and I added my large indoor 12" woofer, mid, tweeter to his living room. So, 8 channels driven. Not using Aux In. Selected Ch3&4 RCA's for Output and fed the second M4. Have 2 at my son in law's house. Same as son's he has 4 Stereo sets that came with the house. There I took his Flat panel TV output and fed the Aux RCA's in for Ch1&2, and selected Ch3&4 RCA's for Output and fed the second M4. Installed 1 in my garage driving indoor and outdoor Bose wall mounts. Bluetooth works great w/ good range. Big bonus for me is the USB. I took my old USB-2 thumb drives and copied genres or "playlists" to a bunch of them. This really is my favorite use. Plug in what I want and crank it up! This is a 4 channel amp, so each speaker has separate volume. Plenty of power. Works for me. Oddities: Looking at the front, the Channels volumes are Ch4, 3, 2, 1 left to right. Being an old time audio guy, Left is Ch1, Right is Ch2 for Stereo. I just wired it so Ch1/3 is my L, Ch2/4 my R. On the Aux input, just hook Source Red to White input, White to Red input. No big deal. Wishlist: USB has Next, Previous & Pause/Play buttons. Would love to see Next & Previous "album" and Shuffle. Update on USB use: It is a bit fussy on the thumb drive you use. Data Travelers work. Patriots USB-2 did not. PNY USB-2 no, USB-3 yes. I just bought a 10 pack of PNY 32GB USB-3.0's that work great. Cheap
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Reviewed in the United States on April 7, 2025 by DE DE
Great product, but know what you’re getting: this is not a true 4-zone stereo amp. It’s actually 4 mono channels or 2 stereo zones. As long as you understand the routing, it’s a fantastic little unit. It’s compact, sounds great, and looks pretty sweet. It’s easy to install and offers solid versatility with both Bluetooth and aux inputs, plus a second input or pass-through option. For the price, it’s a great value. It could work just as well in a multi-room home setup as it would in a vehicle, making it even more useful depending on your needs.
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Reviewed in the United States on July 26, 2025 by Shawn Duross
UPDATE: Just after the warranty expired the Bluetooth capabilities failed. I contacted the vendor and while they would not replace the unit, they did provide me an essentially new unit by sending me an entirely new circuit board for $10 shipping. Swapping out the circuit board is fairly straight forward if you have done this kind of thing before. The replacement board now has a working Bluetooth connection. I have to give this vendor credit for basically replacing the unit out of warranty. I stand by my original review - it is a nice unit. ORIGINAL: I just installed this, so it's early. I have two sets of speakers in the same room that require a different volume setting in order to be properly balanced. This unit does a great job sending the same sound source to two different speakers. My sound source is a Mac using BT, so master volume is controlled on my Mac. The documentation is a little lacking - I have included a diagram of how the volume controls are mapped to stereo signals - I may have missed it, but I could not find it in the documentation. Overall I really like it so far.
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Reviewed in the United States on February 25, 2022 by PCH PCH
Volume control per speaker so if you want L-R must connect one speaker zone to two channels. I have done as much with 2 other mono zones...using all 4 channels and 8 output terminals. The sound is as expected. I have input from tv and have played mp3's off USB. Bluetooth is up and running. The HiFi is doing all I excepted and doing with ease of installation and acceptable performance. Great bang-for-the-buck. I would buy again.
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Reviewed in the United States on December 21, 2021 by Gus
This has been a fantastic product so far for me. Initially got it as I needed a small receiver to fit in an awkward space where speaker wires were located (for reference, smaller than a standard 8.5 x 11 paper). Bluetooth was easy to establish on my phone....the only negative so far has been that I had to forget and re-pair the device once over the course of 2 months with daily use. Another slight negative, when using a google nest device to play music through the speaker it is often poor-performing (slight skipping/crackling), but this doesn't exist when using a phone. Overall, gets the job done and would purchase again (and will purchase again if and when this one dies due to the low cost for what you get).
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Reviewed in the United States on June 29, 2022 by B.