High-resolution audio compatible Bluetooth DAC with EQ bypass function. - Model Name: BTR17 - Bluetooth Function: Yes - High-Resolution Audio Support: Yes - EQ Bypass Function: Yes - Output Format: PCM I'm selling this because I haven't had much opportunity to use it. It's a small, high-performance flagship model. The sound quality is flat and neutral. It can also be used as a regular DAC by connecting it to a PC via USB. It's ultra-compact and has good battery life, making it recommended for use on the go. I've included a picture comparing it to my hand for size reference.