Older PURE CLASS-A Amplifiers


I am looking at some older Pure Class A amps and am curious as to are they as good as some newer amps like the Pass X150, and which ones are recommended, and have they been compared to each other anywhere? Thanks much for the recommendations.

I am considering the following PURE CLASS A amps:
Threshold T-50
Monarchy Audio SM-100 Monos
Monarchy Audio SM-70
Forte Model 4
tpk123
I know of one who owns some 20-plus year old Classe model D-25 (I believe) and really enjoys them. He also has had much exposure to and has owned some outstanding amps.

-IMO
I owned an SM70 and currently own a pair of the Monarchy SE100Delux's. The SM70 was a sweet little amp. I just sold it but it was hard to let it go. Was looking to buy another one and run them as monos but could not find another one with matching faceplate. The only problem I had with the SM70 was that it ran hot. It doubled as a space heater in my little 10x9 office; good in the winter but not so good in the summer.

Hope this helps,
Threshold sa-1 or sa-2 mono bloc amps are still considered the best of class a sound today. They are just very tough to find.

Chang
Gryphon mono blocks DM-100. Excellent amps.Threshold Amps are too bright for my taste.