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

Join PRO & Unlock Exclusive Perks!

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan

Customer Services

About Us

Customer Support

Desert Online General Trading LLC

Dubai, United Arab Emirates

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

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

Product ID: 221372437

Secure Transaction

Details

Voltage
24 Volts (DC)
Manufacturer
Douk Audio
Maximum Supply Voltage
24 Volts (DC)
Minimum Supply Voltage
12 Volts (DC)
Mounting Type
Surface Mount

🎵Supports lossless audio formats

📶Bluetooth 5.0 stable wireless

🔊50W x 4 powerful output

Description

🎧 Elevate your sound game with power, clarity, and style!

SLEEK DURABLE DESIGN - CNC-machined aluminum alloy chassis with anodized finish—stylish enough for your modern home or office setup.
QUAD CHANNEL POWERHOUSE - Unleash 200W total output with independent volume control for each speaker—perfect for immersive multi-room sound.
AUDIOPHILE GRADE CLARITY - Hi-Fi sound ensured by premium components and separate signal circuits for crystal-clear, distortion-free audio.
VERSATILE DIGITAL MUSIC HUB - Play your favorite tracks directly from U-disk supporting MP3, WAV, APE, FLAC, and WMA lossless formats.
SEAMLESS WIRED WIRELESS FUSION - Switch effortlessly between dual RCA inputs and Bluetooth 5.0 for ultimate device compatibility and convenience.

The Douk Audio M4 is a 4-channel Bluetooth amplifier delivering 50W per channel (200W total) with independent volume controls. It supports wired dual RCA and Bluetooth 5.0 inputs, plus U-disk playback of multiple lossless audio formats. Built with high-quality components and a CNC-machined aluminum case, it ensures stable, Hi-Fi sound performance ideal for home or office audio systems.

Specifications

Number of Channels	4
Supply Current	4.5 Amps
Output Power	200 Watts
Minimum Supply Voltage	12 Volts (DC)
Mounting Type	Surface Mount
Voltage	24 Volts (DC)
Maximum Supply Voltage	24 Volts (DC)
Specification Met	CE, FCC
Material Type	Aluminum

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

€ 161.30

Duties & taxes incl.

Slovakiastore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews