Perhaps I am a little late to this discussion, but here goes. I am the type of person who prizes unique and clear (transparent) sounding audio sound. Previously, I owned a current Parasound preamp and amp, which were fine sounding components, but perhaps not that delicate - and slightly harsh at higher volumes. However, I researched a bit an decided to go the route of "vintage" solid state. I prefer a bit crisper sound than tube technology so the CJ PFR was right in my "sweet spot". I paired this preamp with a Yamaha MX-1 amp, which was in excellent condition from Japan. The PFR had aging parts issues, which took my audio tech expert (I live in Taipei, where there is a great appreciation for high-end audio) about two months to straighten out. He replaced old capacitors, found SMD technology to replace obsolete semiconductors, replaced relays, and internal connectors. (I was on pins-and-needles at the time - - - Did I make a poor purchase? There is a reason people here address him as "Master"!) I have Usher Mini-Dancer II speakers, which I think are highly underrated speakers, and a Marantz CD player. I have to say that the sound is powerful and transparent, and will properly exhibit the soundstage, depth, and clarity for all types of music (and I have over 10k CDs).
I am quite pleased with the sound, and friends are amazed!