Two Chassis Amp - Wiring between them.

[NGW]

Thanks for the reply Kevin.

I wasn't expecting to get any replies yet, due to the late hour there.

#1 makes sense. Would a shielded pair be a viable alternative to twisted wires?
#2 The relay idea is probably too much trouble; I'll dump that.
#3 That's what I have planned - coax. Tie the shield to the PI ground node? For the signal Ground; what would you suggest for the Ground-Link-Isolator?
#4 Makes sense and the PS board is set up to take B+ and Ground from the Vs node.
#5 That confirms my thought that the FB wire needs shielding.
#6 No problem there.

What wire gauges would you suggest for the various functions, over this length?

Yes, I always use Galactic Grounding with the chassis ground at the Input Stage node, the jacks are always isolated and I have the heater elevation on the PS board.
The power cord will plug into the bottom chassis and the safety earth will be there.
I may put the power switch in the bottom chassis also. The client isn't bothered with not having it on the panel and there will be a Mute switch, for his convenience. I haven't used Standby Switches before and see no reason to have one here.

This amp is a single Clean channel design to be used as a pedal platform and is a HIWATT design from the Tone Stack to the Power Amp. I am aiming for 60W+ with plenty of headroom.

Thanks for your help Kevin.

Cheers, Noel.