Wilson Lin 寫: How about if my BDP and AV using the same DAC
My BDP is LX71 and AV Amp LX82 both are WM8740
Try it yourself as other power supply / circuit / cable will have effects also.
Analog HDMI
As I have pointed out, only when you have compared the above within your set up, you will then know the performance difference (if exist).
For simplicity, just use a HDMI cable will do.
For comparison, you may use cheap but reasonably good quality RCA cables (e.g. suggested by W0S0L00)