Desperately seeking opinions on amp


Gurus of Audiogon, I beg you for any scraps of information regarding some apparently rare/obscure amps I am considering.

The amplifiers in question are Yamaha BX1 monoblocks. These were pure class A monoblocks rated at 100WPC. They were made in the early 80s. From what I can gather, they were Yamaha's finest.

The original MSRP was $2000 each (!). My 1996 Orion Bluebook puts them valued at $108 each. The current on-line Audiogon Bluebook is $330 each, however there is no recent sales data to support it.

There is little to no information on-line regarding these amps. Can anyone relate any information/opinions regarding these amps? How might they stack up to modern equivalents? My current main amp is a Sumo Nine Plus, which is also a pure Class A design. I am considering the Yamahas as a possible upgrade.

Could anyone estimate where their current value may fall?

Much appreciated,
Mike
BigDope9
bigdope9

Showing 1 response by mark7767

Are these the pryamid amps of the early 80s? Mono amps? I think they are very rare. And I have been looking for a pair of the pyramid amps.