xDuoo MT-603 Pre-Amplifier

The xDuoo MT-603 is a handy little preamp that sits nicely into any setup. That’s because xDuoo has built this tube format into a switcher-style chassis. That means there are four separate inputs (three stereo RCA channels and a front-oriented auxiliary input) and one dedicated stereo RCA output. To navigate these inputs, you’ll find four quick-access, TONELUCK toggle switches right on the front so you know exactly which part of your setup is being treated by the MT-603. The preamp itself is powered by a 12AU7 tube—lauded for its sweetness, warmth, and musicality—meaning that you can set this little box on your desk and easily route any of your inputs through it for instant improvement to your sound. Plus, because it comes in a slick, sand-blasted aluminum chassis with a cutout to expose the glowing tub, it’ll look almost as good as it makes your audio sound.