I've had my Chord Mojo for a few days now. With proper charger everything is silent. The Mojo build is very nice and attractive. The sound is exquisite - it gets out of the way, the best thing a DAC can do. My other DAC - a Benchmark HDR - is also a true benchmark like the name says but it's more expensive. I'd say the sound quality is the same, if anything, the Mojo might be the better, more dynamic one. Mojo is sturdy like a tank and I like very much the clicking volume balls and the on/off ball. Original design. Very happy with my purchase!