Well, the tube family got top shelf...because of ease of connection access, etc....SS gear got the second shelf, as they don't share the Platinum Audio Studio 1's... But the 2A3 amp with the Coral Flats is a delight to listen to! At least with the mellow Lute, et all music... The Grundig NF-10 is no slouch either!! They both mesh well with the preamp...Once I find a tech that can turn it around quickly, I am replacing the volume potentiometer and source selector to a better switch.