唔識咪要問
2020-7-5 00:24:29
Sorry for the confusion. Yes, you must disconnect headphones to activate the RCA outputs.
When headphones are plugged in, the RCA Outputs are floating (no connection inside of the amp besides ground). Thus, you are definitely describing a form of high frequency ground loop between the source and speakers. A ground loop isolator will likely help. Using different outputs rarely resolves this behavior.
基本上講緊balance out 係headphone雖然大power d,但noise會大d, damping factor細一半
我會補充一點係單元本身唔會做到common mode rejection,所以係享受唔到balance所應該有嘅「抗noise優勢」
其實single end只要左右兩邊分開做ground就應該冇crosstalk?