For what it's worth, I ended up buying a new Koetsu Black instead of having my 20 year old one rebuilt. I liked the old one reasonably well, but I have to admit, there was no real comparison. I think that those that postulated that the innards of the old one would have dried out (or whatever) and become less responsive were correct. (This wasn't a stylus issue...it just didn't have that many hours on it--1000, maybe 1500.) The new one seems wonderful, for my taste.
Markc2, the Koetsu is very low output. I didn't have a pre-pre in my pre-amp, so got a EAR 834P, which seems to be a really fine match for the Koetsu. Very recently, I got a Rhea, which I frankly don't like as much as the EAR so far, but it's not yet broken in yet, and everyone tells me to just give it time. I know that Koetsu used to make a transformer/step-up (because I still have mine). Don't know how good they are, but one guy told me to hang onto it...I guess they're kind of rare.
Markc2, the Koetsu is very low output. I didn't have a pre-pre in my pre-amp, so got a EAR 834P, which seems to be a really fine match for the Koetsu. Very recently, I got a Rhea, which I frankly don't like as much as the EAR so far, but it's not yet broken in yet, and everyone tells me to just give it time. I know that Koetsu used to make a transformer/step-up (because I still have mine). Don't know how good they are, but one guy told me to hang onto it...I guess they're kind of rare.