KGUSS DAC-K3 PRO Headphone Amplifier ES9018K2M Decoder USB DAC USB/Optical/Coaxial Input RCA Output 24Bit 192kHz Desktop Audio Preamplifier Black

Initially very happy with it, but (each time) using it for about 4 hours or so and eventually the audio just cuts off.. The Audio Device vanishes from the device manager.. Sometimes, instead of just vanishing, it'll just output a constant stream of digital tics and pulses.. Either way, switching it off for half-an-hour sees it come back and working fine..I can't help but feel it's overheating, yet the device is standing on it's own with nothing hot near it.. The case does get quite warm when powered on, but it's not alarmingly hot.. Ambient temps are UK temps, so not really particular hot, and it's been doing this since I bought it 6 months back..It's sad, it's a great sounding device and very happy with the quality, but the overheating thing is bugging me a lot now..Think I'll save my pennies and get a Topping box at some point, won't be spending my money on anymore KGUSS products I'm afraid..