…”Wow what an amazing result, this is the best move I did over the past 10 years. I am loving your HA-160D Head amp/DAC. I have been listening it with my Grado headphones as well with my Quad 22L2 main speakers and this system produce more quality than I was expecting , enough to use it to upgrade my Atoll 200 CD player.. I’ve been using both the coax input with a CD player and the USB input with my PC and both sound perfect with FLAC files or CD”…