experiment with power line conditioning & quality interconnects before you go inside; you may not even need to.
Know anybody who mods analog r2r tape machines?
I've obtained an old REVOX/STUDER B77 MK II together with some Jazz and classical tapes at a garage sale. The sound is amazingly good with a nicely layered soundstage. However the sound is also typically old solidstate, a bit harsh and grainy. Here in its country of origin no tech is interested anymore in this old stuff and wasn't the US in the old days called the "country of infinite possibilities" to those who dreamt of leaving the old continent? Wonder if this still is so....