Mark's prices are right on the money. Period.:yes:
I almost bought his, as his prices were spot-on good. I've been waiting a long time for B-1/C-1 in working condition. I bought a C-1 elsewhere earlier, but it had some issues. Sold it to another AK'er for a parts unit. Can't remember the exact amount, but around $500 (plus he had to pay shipping to Germany, and tarif). He had over $650 into the unit and was hoping between his and mine, he'd have one complete working unit. He could comment on the value of these as well.
The C-1 I owned worked well enough for me to get a taste of vfet magic in a preamp. I was impressed. There are about 50-75 connectors in the C-1 and maybe 15-20 boards. I've decided there are too many places for small connection issues and am sticking with my C-2x which is an exercise in simplicity. The C-1 is very impressive though. Certainly the top collector in Yammy Preamps IMHO.
I still want the B-1:drool:, but can't swing it at the moment. I hope when I can, there will be a working B-1 in decent condition that I can pick up for $1600 including the controller. I almost bit on one from Canada with no controller for $1400 last year. And I had no idea who the seller was, whether it truely worked (which is a BIG deal when dealing with vfets), and would have had to pay big shipping charges.
The C-2a and M-2 are in a different class. Good units (used to own both), but a completely different world. Like comparing a C-2 or C-2a, to a C-2x.
I will buy as many $500-600 B-1s you can get your hands on. PLEASE find me some! No joke. The bypassed C-1 you saw was a unit similar to mine. Not working correctly, could not buy parts (anywhere), high shipping cost. Pricey for a parts unit, but cheap if you had another $700 C-1 waiting in the wings with different issues.
If anyone has questions regarding the value of any of the best components that Yamaha ever produced, feel lucky of Mark B. chimes in with his opinion. He's 'been there, done that'; and owns most of them. Unlike most of us that just lust after equipment, he buys it. I think he knows what it's worth.
Remember with vfets, especially the B-1 & C-1 that many of the parts truely are unobtainium. At least with the B-2 vfet amp, you can still find donor amps to buy if things go up in smoke. Make sure everything is in working order before you purchase, as many parts cannot be sourced or substituted.