Will you lose sound quality of running 2 Dual TT thru an audio switch box into 1 phono input. They can only be played one at a time but trying to use my spare TT.
Interesting.....is that a volume knob? If so, I'd try to find one that does not have that and just lets you select between the two inputs. Less is better in my estimation when trying to preserve the integrity of the signal. Others might chime in here and have different opinions.