I can't speak about Expert's current work, but when I used them twenty or more years ago to retip two Koetsus, they completely altered the sound from the originals. Expert mounted their own proprietary tips (Ooh er missus) whose profile is quite different to Koetsu's , so it's not really...
If you want to retain the original nature of the Koetsu sound, I would avoid Expert Stylus, although their work is superb, it'll no longer be a Koetsu.
Hi Ked, not that knowledgeable, just a long term fan of Yamamura! My system's currently in flux, having used many of the obvious contenders over the years, I'm now working towards a custom "full-range" design preferably driven with transimpedance amps, though I am quite fond of some of Joachim...
Modified Lowther PM4s were only used in the very earliest Dionisio's, all subsequent models from around late 94 were Bé's own Cantus driver, which went through at least 5 or 6 incarnations which Pietro has described on his own thread.
Hi Gian
The photo was taken by Bé's friend Brian.
I am a huge Yamamura fan and was inspired when I read Ken Kessler's article about your system. Luckily I became friends with Brian, who worked and stayed with Bé during that time. Brian apologised for the poor quality of the photos because of...