…”I have successfully upgraded my old Marantz SR8500 Receiver. One burson discrete opamp for the L-R channels the other for the Centre and Sub. I use the Marantz only as a preamp into my RMB-1095.
For now I’m using cheap 7*15 regs but look forward to buy some low noise regs from you in the future.
The sound of my HT has increased beyond anything that I have lately tried so the old Marantz is staying a bit longer yet.

I’ve even rediscovered my CD collection with my Rotel RCD-965 with Burson plus clock.

Keep up the good work”…