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4 Channel Bluetooth Amplifier, 50W x 4 Audio Power Amp, Hi-Fi Home Stereo… competes with other Displays & Upscalers products on SpecPicks. Use our Compare tool to view specs side-by-side, or browse the full Displays & Upscalers category for alternatives.

Douk Audio

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

Name: 4 Channel Bluetooth Amplifier, 50W x 4 Audio Power Amp, Hi-Fi Home Stereo Speaker Receiver [Douk Audio M4]
Brand: Douk Audio
SKU: B0875WY9TX
Price: 69.99 USD
Availability: InStock

By SpecPicks Editorial · Verified 2026-07-22

$69.99

Buy on Amazon — $69.99 Compare to similar displays & upscalers

*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.

Bottom line: The 4 Channel Bluetooth Amplifier, 50W x 4 Audio Power Amp, Hi-Fi Home Stereo Speaker Receiver [Douk Audio M4] is a niche pick — read recent reviews before buying in the displays & upscalers category, priced around $69.99. Read recent reviews carefully before committing.

SpecPicks Verdict

SpecPicks classifies 4 Channel Bluetooth Amplifier, 50W x 4 Audio Power Amp, Hi-Fi Home… as a niche pick — read recent reviews before buying in the displays & upscalers category, based on our editorial and benchmark analysis and our ranking model that weights rating × review-volume × price-fit. Douk Audio's positioning sits within the broader category mid-tier. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.

Common buyer scenarios for displays & upscalers of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ Backed by Douk Audio's warranty and support channels
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key 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 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.

Full Specifications

Brand	Douk Audio
Connectivity	Bluetooth
Model Number	SUC-M4
Connection Type	Wired
Mfr Part Number	SUC-M4

Ready to buy?

4 Channel Bluetooth Amplifier, 50W x 4 Audio Power Amp, Hi-Fi Home Stereo Speaker Receiver [Douk Audio M4] is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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*Price sourced from Amazon.com. Last updated 2026-07-22. Price and availability subject to change.