Thanks for your suggestions, cdr! Would you have any idea how much
of that distortion was caused by the phono preamp section, and how
much by the ADC stage? In my case, I already have a consumer-grade
receiver that includes a phono preamp (MM, not MC).
>> the 25' of audio cables (RCA plugs) necessary to connect my "stereo
These are line-level signals here; the turntable is right next to
the receiver with its phono preamp. I'm planning on moving the
cassette deck closer while digitizing, but because of my room layout
moving the receiver and turntable much closer would take
> at the very least it increases the likelihood gear is plugged into different outlets, and potential ground-loops.
That's a good point. I can temporarily plug my "stereo system" into
my computer system's UPS by using a 120V extension cord, which
should eliminate (or at least minimize) ground loops.
> are you using balanced XLR? s/PDIF?
This is a consumer-grade system, using unbalanced RCA connectors.
Everything except the short distance from the turntable to the
receiver is a line-level signal, if that matters.
Thanks again for your carefully thought-out and comprehensive replies!
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