A question for fans of Threshold amplifiers


I'm very lucky to be able to hear numerous highly regarded solid state amplifiers in my home because I do professional reviewing.  In the last year I have been able to acquire three pristine re-capped E-series Threshold amplifiers.  These are a S/350e, S/550e, and a SA/4e.  When compared to some of the most highly regarded/high price amplifiers on today's market, not only did they hold there own, but particularly the S/550e/SA/4e, I found to be superior in my system.

It has been a long time since any threads have discussed any Threshold amplifiers at all.  So, I'm curious if there are any GON members who use any of the Threshold E-series amps and what your experience has been at comparing them to current production amplifiers.


teajay
@Ping7507, Are you sure you have a 550 “e”? The earlier 500 non-e versions had only one. The later new owner’s made in China “5000e” might only have one as well.
Perhaps, I can add a request as well: can any one post the Stereophile measurements for the Threshold S550e?
It must be the model S550e. I don't know why the former owner did these things. I just hope that the original specifications of the transformer information can be retrieved.
@ping7507, At the risk of appearing to just be playing the contrarian; why must it be a model S550e? For example; is it possible that a new face plate was put on an older amp? I'm not trying to challenge your assertion, but rather trying to understand the cause for your certainty.