The B1 was special. I think it weighed about 80 lbs.
I picked up a Superphone Rev Basic at a high end dealer in Grand Haven Mi around 1990. It replaced the Luxman. That with the Yamaha B1 amp running epos 14 speakers really sounded good for what I had into them. I was using an Empire Troubadour turntable at that time with a grado signature cartridge on a black widow arm. Odd combination, but it worked.
+1 on the Korneff amp! They are great products. I run Lowther speakers with an REL sub. The Lowthers demand quality low powered amps, as they are ruthless with anything even marginal. I have a Korneff single ended amp that powers them (currently trying some Valvet single ended SS amps with them, but it's to early to tell if they'll stay). Prior to the Lowthers I was running Epos speakers. Had several amps go across them. The best were Audio Research D40 & Yamaha B1 amps. Very different amps as one (the Yamaha) is solid state & the Audio Research is tubed. In the end I preferred the tubes for their 3d ability. I was just starting my audiophile journey back then so also had several preamps. Never cared for the solid state ones although Stan Warrens designs were pretty good. Tried a SS Mac preamp once (don't remember which one) & hated it. Same with Luxman at the time. Ended up with a Melos 222 which I'm still using today. In regard to analog, I really think the Rega 300 arm was way overstated in the audiophile world. Bought an old Victor arm (from the 80's) for about the same money & it absolutely blew it away. Replaced the Victor with a Polestar arm which is very understated in regard to reviews but to my ears about as neutral as they get. Very impressed with it. I've had several cartridges over the years. The standouts were dynavector karet & Clearaudio's MC concept. Denons flagship & the Benz L2 were also good but paled in comparison to the other two mentioned. I haven't gotten into the digital high end world but am impressed with the measly priced Parasound ZDAC. It appears that digital has made some considerable leaps in sound quality since the late 80's so will probably put some effort to that at some point in the future. That's it for now.