hi sorry i am still confuse. I have the mark levinson380 S pre amp. it doesn't have a tape loop label on the back. it does have rec A out and rec B out on the back is that the same thing. if i use the rec A out to the filter, which input on the preamp should i connect the filter output to? and how do i know if it's activated? let say if i am listen to cd or tuner , i can't really push the tape switch?
thanks