I have a Bryston 9B SST. It has two screw terminals on the back of the amp that require 4-12V AC or DC to trigger the amp. Polarity doesn't matter. If you don't have the terminal strip (it's a green plug into the back of the amp) Bryston should be able to send one to you. They did for me. The switches on the amp need to be set to enable the trigger. I can't remember the configuration off the top of my head, but Bryston's website has all of the manuals online.

Good Luck. It's a great amp.

Russ

861v4, HD621, DSP6000 24/96, DSP5000 24/96, DSP 5000C 24/96, Bryston 9B-SST, JM Lab Electra 915.1, CC900, 906, Oppo BDP-93, Tivo Premier, Amazon Fire TV, VPI Scout, Benz Micro L2, non plus ultra MC phonostage