Listening test setup question: Comparing DACS 2016-06-18 11:20:07 Hello;I'm either failing at search (very possible) or this question hasn't been asked before (unlikely?) but:What is the correct way to setup two DACs or two amplifiers for a listening test with one pair of headphones?Is this possible? I can see some potential issues with it, but I feel like there has to be a way. Or, is it simply better to switch the headphones or have two of the same model of headphones?I feel like the only way to get a proper comparison would be to have some way to be able to instantly switch between two DACs or amps without knowing which one was in use- I can see how to do that with a relatively simple RCA switcher for DAC into Amp, but switching between Amps doesn't seem so easy! (Hm, output from dac duplicated to both amps, then run the headphone outs into an RCA switcher, I suppose?)That leaves me with- ok, so I've got A and B, how do I get X?