In the Should Topping send Amir a DX3Pro LDAC/V2 to test? thread, someone asked me if I could measure DX3Pro LDAC/V2. Considering that this unit was not in my purchase plan, I borrowed one from Topping.From its Amazon price of $ 219.99, it seems that it should not be too much to complain about appearance, texture, build quality, etc.But if you are critical, you can blame the quality of the RCA / COAX connector.The touch of the surface treatment is very good, and I really like how it feels when touched --- the sound from the friction of the touch is not soft enough.The encoder switch has good damping and positioning feel. However, the sound is slightly "fluffy", which is not good enough ...Well, forget the nonsense above ... Measure it!Part I: DACPart 2: Headphone outputoutput impedance:IMO: The headphone output is actually not good enough (sorry, this conclusion does not consider the price). But the DAC part is doing well.The price is beyond reproach.BTW: Bluetooth testing may have to wait a few days, my adapter has not arrived yet.