I picked one of these up from the Sony Centre to work wirelessly (LDAC) with my h800 headphones. Thought it would also replace my Meridian Explorer 2 DAC, but quite disappointed to find that despite supporting MQA files played from the memory, it doesn't seem to do MQA Decoding when in USB-DAC mode. Also seem to have an issue with Audirvana/BitPerfect not being able to grab exclusive control of the DAC and it constantly connecting/disconnecting, so will try the same with Tidal on the laptop. Hope it's not the cable as I only have one, and it seems to work fine for USB file transfers. Edit: It was Integer Mode, as soon as I disabled that everything started working. Tidal seems to need Exclusive Mode disabling.