Little Bear MC103 PRO XLR Balanced Passive Selector (1-In-3-Out or 3-In-1-Out) Review

The Little Bear MC103 PRO is a passive stereo audio splitter priced at $59.99 and sold in two versions: 3-IN-1-OUT, which switches three sources into one amplifier, or 1-IN-3-OUT, which sends one source to three amplifiers. Both use stereo XLR connections throughout.

It is designed for listeners with several pieces of XLR-equipped gear. The 3-in-1-out version lets you compare different sources through the same amplifier, while the 1-in-3-out version makes it easy to compare the sound of three amplifiers fed by one source. The routing is selected with the unit's switch, and the whole design is passive, meaning no power supply and, in the maker's words, no impact on sound quality.

Physically, the MC103 PRO uses an all-aluminium shell intended to keep external noise away from the signal, with gold-plated XLR ports for reliable electrical contact and minimal attenuation. Inside, each channel is connected with shielding wire to reduce interference, and the switch uses silver-plated contacts with HOT/COLD simultaneous switching and a common GND terminal. It measures 148 x 105 x 69mm and weighs 470g, small enough to tuck behind a rack or carry. Two things to note before buying: the package contains only the XLR audio selector, with no audio cables, and the maker warns that while most devices are compatible, that is not guaranteed for all, and an isolation module may be required if common ground noise appears.

The store ships worldwide with free and expedited options and shipping costs that vary by country. Orders under 2kg travel by airmail (10-25 days) and over 2kg by DHL, UPS or FedEx (5-8 days); at 470g the MC103 PRO ships by airmail. Any import duties or customs charges are the customer's responsibility. All items come with a 30-day free return or full refund and a 1-year warranty, excluding orders placed by mistake, man-made damage or misuse, a subjective change of mind, and anything else outside the warranty terms.