When using Bluetooth as the input, will the audio be output to all 4 channels simultaneously?

Yes. in its simplest setup, there is basically Stereo, Left and Right audio channels, times two If you want it to work that way. OR, if you want/need to something more complex, you can change the mode of operation by pressing a button in the back, and have 2 separate Stereo feeds. One Stereo feed for channel 1 and 2, and a different Stereo feed for channel 3 and 4 by using the RCA jacks on the back. Its pretty well explained in the manual, and in the details of the Item Description if you cared to read it.

At low volume levels my unit cuts in and out, with an accompanying soft hum/beep. Before I ask for a replacement, ahs anyone else experienced this?

Hello. Could you please send us a message on Amazon with more details? This issue may happen if the speaker power is too high.

Does this have sufficient power to power 4 Aura ast-2b-04 shakers?

I have 35 watt ceiling speakers and the volume is very sufficient. You could always try it or send it back if it didn't work. Great amp for the price and very small footprint.

Is there a way to hook up a master volume switch to this unit, any ideas???

Hello. You can add a volume control before this device. For example, https://www.amazon.com/dp/B07GRLV7XG?ref=myi_title_dp

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

Product ID: 473461440

Details

Voltage
24 Volts (DC)
Manufacturer
Douk Audio
Maximum supply voltage
24 Volts
Minimum supply voltage
12 Volts
Mounting type
Surface Mount

🎵Supports MP3, FLAC, WAV, APE lossless

🔊50W x 4 max output power

🔗Bluetooth 5.0 + wired RCA inputs

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Description

🎧 Elevate your soundscape—4 channels, endless possibilities!

HI FI SOUND CLARITY - Engineered with premium components and separate signal circuits for crystal-clear, distortion-free audio.
SLEEK DURABLE DESIGN - CNC-machined aluminum alloy chassis with anodized finish—stylish enough for your office or home desktop.
VERSATILE CONNECTIVITY - Seamlessly switch between Bluetooth 5.0 wireless, dual stereo RCA inputs, and U-disk playback for ultimate flexibility.
POWERFUL 4 CHANNEL OUTPUT - Deliver immersive sound with 50W per channel, perfect for multi-room or multi-speaker setups.
INDEPENDENT VOLUME CONTROL - Fine-tune each speaker’s volume individually to create the perfect audio balance in any space.

The Douk Audio M4 is a compact 4-channel Bluetooth amplifier delivering 50W per channel with versatile inputs including Bluetooth 5.0, dual stereo RCA, and U-disk support for multiple lossless audio formats. It features independent volume controls for each channel, a high SNR of ≥98dB, and a durable CNC-machined aluminum case, making it ideal for multi-room audio setups, home offices, or desktop Hi-Fi systems.

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₨152609

Duties & taxes included

In stock

Sold byAmazon Sri LankaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Sri Lanka.

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TrustScore 4.5 | 7,300+ reviews

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ASIN	B0875WY9TX
Brand Name	Douk Audio
Customer Reviews	4.2 4.2 out of 5 stars (344)
Manufacturer	Douk Audio
Manufacturer Part Number	SUC-M4
Model Number	SUC-M4

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

Details

Details

Description

Specifications

Common Questions