[A27Hull]

I went back and checked the amp/room. The Ground switch on the amp has only two positions.

Room circuit, Big slot=neutral, Small Slot=hot, Grnd=Grnd.

In the room circuit, from hot to ground = 120, from hot to neutral = 120, and from neutral to ground = 0.

With the amp in Standby Mode, with Ground (what I consider to be the "off"state) switch off: ground to chassis = approx. 0.

With the amp in Standby Mode, with Ground switch "on": ground to chassis = 120.

With the amp in "Run" Mode, with Ground switch "off": ground to chassis = 46-47 VAC

With the amp in "Run" Mode, with Ground switch "on": ground to chassis = 120 VAC

In short, what you initially told me was correct. Their does exist a shock potential if something is touching both chassis and something grounded. Good thing to know.

Thanks to you both,

Andrew.