Douk Audio MX5 Mono/Stereo 4-Channel Audio Mixer Review

The Douk Audio MX5, at $64.99, is a compact 4-channel audio mixer for line-level sources: four groups of 6.35mm/3.5mm inputs feeding a single 6.35mm/3.5mm output, in an all-metal case with aluminum knobs.

Each of the four channels has an independent mono/stereo switch and its own volume knob, with a fifth main volume control, so CD players, computers, phones, and preamps can each be trimmed separately before the mix. The listing emphasizes that the channels do not interfere with one another. A built-in 16-bit stereo dual-color LED level meter displays output level in real time; its display mode, color, and gain are all adjustable.

Two operating quirks are stated plainly in the listing: the 3.5mm headphone output always takes priority and auto-disconnects the 6.35mm output when used, and the MX5 only accepts standard audio signals — it cannot connect phono turntables or microphones directly. The unit runs on DC5V, does not include a DC5V power adapter, and supports headphones of 16–200Ω with a 50kΩ input impedance. Gold-plated RCA terminals and the aluminum chassis are aimed at shielding and solid connections.

Douk Audio ships worldwide with free and expedited options whose cost varies by destination; packages under 2kg typically go via airmail (10-25 days) and heavier ones via DHL, UPS, or FedEx (5-8 days), with import duties the customer's responsibility. All items carry a 1-year warranty and Douk Audio's 30-day free return or full-refund policy, excluding mistaken orders, man-made damage or misuse, and subjective change-of-mind returns.