Chase RLC-1 Remote Line Controller does what you want:
Adds wireless remote control to any non remote equipped stereo receiver or preamp. controls volume, balance, mute, power on/off, bass and treble and input switching for up to 4 line level sources.
No noise or distortion 105db S/N RATIO 0.05% THD & IM
rare new open box
https://www.ebay.com/itm/324799591226?epid=1424512686&hash=item4b9f90733a:g:9aEAAOSw84ZhS7Vl
other used ones are out there, make sure it has the remote, you cannot use it without the remote.
I have used them in my systems for many years, and tried hard to detect any detriment to having it in or out of the system. It simply does it’s job undetected.
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the new open box I linked is a darn good price, is FREE RETURN 30 days, you have nothing to lose trying it.