I find it a pity that the usual response around here to someone wanting to modify their amplifier, is "leave it a alone", "don't modify it" etc. This entire hobby was started and built upon by hobbyists modifying and DIY'ing their gear.
My interests and lifelong passion was started by building, modifying and fixing audio related gear.
I think it is great he wants to modify this amplifier to do what he wants.
After all, it's just an AU-717. 10's of thousands were made. I've got several in boxes just for spare parts. It's not rare and never will be. They are a nice enough amplifier, but if someone wants to make a remote volume for it, why rain on his parade?
Remote volume is one of those things that practically everyone appreciates and was sorely missing back in the 70s hi-fi days. Personally, I don't care one way or another. I'm used to walking up to my gear and turning the knob. I was my Dad's remote control in the 70s!
But installing a remote in an AU-717 is not a sin. It is pretty easy and doesn't require anything that is not reversible (but does that really matter anyway?). If he wants a remote window in the front panel, go find a donor piece of gear with a nice round red IR window you can gut out, drill an identical hole for the window and set it above the power switch. It'd look fine there.
But realistically, to the OP: If you want unbiased help on installing a remote volume, it may be better to post in DIY, because the "Exclusively Sansui" section has more collectors and doing anything to something with the Sansui name on it, can be an anathema to them.
