@steve59 bingo, totally correct, without a switch box. I don't trust the switch box, the build quality and material will effect the sound quality and characteristic for sure. I can underdtand the speaker cable conncected become a capacitor with very low capacitance. But other then that, it will drained power even with a open circuit (the tuerned off amp) ?
@russ69 thanks, but as I said above, I don't trust switch box, just don't like it. And I have two complete setups, from the dac to amp.