Backup Generator transfer switch

I have a similar ATS, although mine is in the basement right next to the panels not outside. Fremer does add towards the end of his last article in Stereophile that it could have something to do with having over $800,000 dollars of a system (some of which is review products) and more expensive equipment can be more sensitive to issues.....Nothing I'll have to worry about.

I plan to install a Generac whole house after the disaster here in Texas and will be digging down with the same electrician that installed the subsystem I use to power the hi-fi, which is essentially a 60 amp feed from the main service entrance to a sub panel that goes into a 10kVA iso transformer and routes via 4 gauge to a sub panel dedicated to the system and from which are pulled dedicated lines. 
I have no interest in playing the system during any electrical back up period, but the Fremer experience was brought to my attention. Given that virtually all this electrical equipment is outside in close proximity to the service panel (no basement, just pier and beam construction), it should be possible to route this back up in a way that does not involve the switch but I'm not an electrician and haven't thought this through yet, let alone met with the electricians to discuss it. I had a terrific experience with them in installing the above described subsystem-- mainly commercial contractors, they really knew their stuff. I haven't focused on this yet, but if anybody has any thoughts, I'd certainly welcome them. Sorry to piggy back on your thread, @deadlift .

If all you do is add a transfer box, essentially nothing more than a box with some switches, one switch per circuit you want to be able to transfer, then no problem. That is what I did. When power cuts out I start up the generator, plug it in and use the transfer box switches to power the few circuits I want to keep running.  

This works great, no impact on SQ, but is manual and limited. The whole thing could be automated for a lot more money and still have no impact on SQ. 

But the reason for the lack of SQ impact is the whole thing is out of the circuit other than when in use. The minute you do anything that is in the circuit- ie connected- then it will degrade SQ no matter what. You might not hear it. From what I can tell a lot of people won't. Or you can imagine and exaggerate, like Fremer. 

Yes folks even Fremer can't get it right. One more example why of all the mountains of bull in audio none even comes close to the Himalayan Range of BS around AC. 

I have a whole house Koehler generator that I had installed when we built our house four years ago. I cannot comment on on the transfer switch as my stereo room was the last major indoor project I did after occupying the house. Since moving in  we have unfortunately had numerous outages with the longest being 6 days. I have tried playing music with the generator running and even though I get a spot on 120V there is a constant annoying low level hum like a bee coming out of each speaker so I don’t play music on my system during outages. 

Where is @jea48 when you need him?
Bob