Worth repairing Essence Amp?

Did you open it up and see if each channel is fuse protected?   Not uncommon for there to be internal fuses for each channel, power supply....

The designers name is Dale Pitcher. My understanding of his amps is that they were pretty complex but sounded terrific. Member audiobunker sold many products produced by Dale over the years. I am not sure if he can help you or not.

Audiobunker, Duane Randleman  of Automated Lifestyles in LeClaire Iowa did a great job helping me through this. He has someone able to service these amplifiers, also worked on my Essence pre amp, and gave very good recommendations for tubes on the Lazarus pre amp I was using as a phono pre amp that Dale sold to me some 30 plus years ago.  Highly recommended.

I would add I thought the prices very reasonable for the quality of amp, to replace of equal caliber with something new would have been much more expensive. They do apparently have some of Dale's schematics as well. 

There were many of Dales amps sold here in Louisville they were also serviced here at one time. Great local tech semi retired he may or may not want to service. They are not your normal layout and parts selection. I owned 2 of these amps and they do sound great. They are difficult to secure and ship. Tom