I have a MONO LINE LEVEL OUTPUT and I want to share it with 2 devices (which will received the LINE LEVEL OUTPUT and use it for whatever reason). In one of those devices I need to use a 10K potentiometer in order to control the signal level that goes to one of those devices. See my drawing below, please.
My question is: does this 10k potentiometer affects the signal on device 1? I mean, will the signal get lower OR lose any bass? I am asking this, because as I am seeing, the potentiometer that was added is in parallel between + and -, so I think it should affect a little bit device 1 but I am not sure because I am pretty sure that devices 1 and 2 have high input impedance, so maybe this 10k resistor would not affect (less than 1%). But what do you think?