If my McIntosh mx110z tube tuner/preamp died, I would fix it or get another, without a sideways glance at another.
I received mine, used it for over a year, then gave it to Audio Classics.
Best thing they did was replace all the rca jack panels with new gold plated ones.
My advice now, if buying vintage, save a step: have seller ship it directly to your restorer, in my case, here in the east, Audio Classics.
They do this and that, then on to you.
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This one has already been 'done' by Audio Classics.
see the new rca jacks.
this one, see the old corroded jacks
zero noise, fabulous fm, two wonderful phono inputs (I use SUT for MC to keep using mx110z's phono.
McIntosh units have the wonderful MODE dial, very helpful playing Mono LPs, , balance, loudness, tone ....