Over 60 year period I had SS, then tubes, then SS, then back to Tubes. You know you prefer tubes.
I use a Chase RLC-1 Remote Line Controller so that I can continue to enjoy my Vintage Full Featured Tube Tuner Preamp which has no remote features.
This is an unusual listing for two working units with 2 remotes for $120., one unit has cosmetic issue.
You get optional features: remote power, remote volume, remote balance, remote tone controls, and it has automatic and progressive bass boost for very low level listening. I only use 1 input in/out, but it has 4 selectable lines in and 2 identical out..
Once you realize how much difference a slight tweak to balance can make, there is no living without it.
You can use it in/out or in a switched loop like tape or processor.
Neither I nor any of my friends have ever been able to detect if it is In or Out of my 3 systems.
From time to time there are none available to several, like now
https://www.hifishark.com/search?q=chase+rlc-1
You MUST have a remote, there are no controls on the unit.