Douk Audio SP102 Passive Audio Selector / Stereo Switcher for Amplifiers and Speakers Review

The Douk Audio SP102 is a passive stereo audio selector priced at $59.99, sitting in the switching-box category of hi-fi accessories. It measures 242 x 108 x 33mm and weighs 720g, and its job is simple: swap between two amplifiers or two pairs of speakers at the flip of a toggle instead of re-plugging cables and wearing out your sockets.

Because the circuit is purely mechanical, the SP102 needs no power supply at all. Douk Audio says there is no loss of input and output signal during transmission, no audio rendering and no electromagnetic interference, so the audio passes through untouched. Each channel can pass up to 200W, and all channels use a fully isolated design so they do not interfere with one another. The box works in either 1-IN-2-OUT or 2-IN-1-OUT mode and is compatible with every amplifier type the company lists: BTL, Class A, Class B, Class D and tube amps, as well as most passive speakers.

Operation is a single A/B toggle switch. In the OFF position, the connection between the A/B channels and the I/O channel is disconnected, which is equivalent to a mute and no sound will output. One limitation matters: only one group of amplifier input or one group of speaker output can be active at a time, so the SP102 cannot run two groups in parallel simultaneously. The package contains the SP102 switcher and a user manual.

Douk Audio ships worldwide with free and expedited options, and the cost varies by destination country. Packages under 2kg go by airmail (10-25 days); heavier orders ship via DHL, UPS or FedEx (5-8 days). Import duties or customs charges are the buyer's responsibility. The store offers a 30-day free return or full refund and a 1-year warranty on all items, excluding orders placed by mistake, man-made damage or misuse, subjective change of mind, and anything outside the warranty terms.