Cd555 dual interconnect

You can, but for best performance make sure you switch between them rather than have both enabled at the same time, which is a performance compromise. Only thing I don’t know is if there’s any further compromise having something connected to the other output even when switched off.. 

would it not be safer to just take signal from the tape out of the preamp? 

Many tnx

I was doing that with 272 but can I do it with rca nac552? Also looks like I will connect 2 headphone amp.... one electrostatic one solid state