Calloway, what amplifier(s) are you using with them? Since the OP stated their amplifier of choice for usage in. I recently bought a barely used matched quad set of "royal princess" for use in my Wavelength Cardinal XS amplifier pair.
Oceanica, My amplifiers are too recent to me to have tried different tube pairings, tho, I earlier purchased a pair of Shuguang Black Treasures. I have no complaints with either, but have been too busy enjoying the music to exchange for an attempt at a comparison. I suppose this was not much help:) Interested in your future findings.
Oceanica, My amplifiers are too recent to me to have tried different tube pairings, tho, I earlier purchased a pair of Shuguang Black Treasures. I have no complaints with either, but have been too busy enjoying the music to exchange for an attempt at a comparison. I suppose this was not much help:) Interested in your future findings.