Those of us that repaired them, loved Phlame Linears(they kept us busy).
phase linear amplifiers
back in the early 70's I bought a phase linear 400 amp. never will buy phase linear again. in 2000. it fried 3 of my speakers. later on I read they they were known to do this. they were cheap money for the big watts but were not well designed well to work under stress. I have McIntosh now. no worrys!