Any advice about the results of modifying/upgrading an older solid state preamp like Marantz, Harmon Kardon, etc. with modern capacitors, etc.? Who does work like this well, and are the results good? Which parts are most needing of upgrade?
Personally, I would compare buying a used high end pre-amp to the cost of buying and upgrading an old unit. You can get something like a Sumo Athena for around $250 and it will blow away almost anything solid state that you are considering.
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