I really enjoyed that Kondo video. Haven't had the privilege to hear high end Kondo amps though, but was just wondering whether a vintage Radford can compare at any level - have an original, unrestored STA15 Series 3 here that seems fine to me?
I have just finished hotting up a Radford STA15 Series 3 amp with SHINKOH Tantalum resistors, Jensen 220uf caps, Vintage Amperex EL34 metal base, non cage Mullard EF86, RCA 6U8, Mullard metal base GZ34, all the tubes are the best i could find, Eichman Speaker posts and RCA sockets. Rewired the critical sections in the amp with cloth solid core copper wire and Goertz Speaker cable cut in half, and finally 4 Duelund .47 copper foil caps. It sounds goooooood.