I concur @wolf_garcia , I recently ran an XA25 into a pair of refurbished Quad 57’s and resolution was off the scale yet retained a natural tonality and texture.
KT150 to KT120..or KT120 to KT150
Has anyone here gone from using KT120's in their amp to KT150's and preferred the KT150 tube...conversely has anyone gone from KT150's in their amp to KT120's and preferred the KT120's?