Vintage amp as preamp
I have a Harmon AV receiver in my family room and it doesn’t have a phono input. I have two vintage audio pieces:
Lenoxx Sound SL-700 (with phono in), A and B rca speaker outs.
Garrard Electrophonic console with built in turntable, amp, etc, A and B rca speaker outs.
Can I go rca speaker out to tape input on my Harmon receiver and effectively use either of these pieces as a preamp in that regard? My apologies if this is a ridiculous question. I’m learning as I go and I wasn’t able to find the answer online. I know it will generate sound, but will it result in any degradation to audio quality?