In article 6QWYh.84494$_c5.11297@attbi_s22,
says...


I can select from tuner, tape, turntable, and auxiliary inputs on that
receiver.

the tuner isnt an input, and besides the pre-amp on the turntable input, the
circuit is the same between the tape and aux inputs, it's just switched.
That's what the knob you're selecting with does. What, you think they build
seperate pre-amps for aux and tape inputs?