Isolation transformer question

I have Torus TOT isolator. I have everything but my tube amps on it except network stuff which is on clean sine wave UPS. 

IMO a regulator can do much more for you than a simple isolator, but the isolator can eliminate DC on the line, which is kind of rare, increase filtering due to increased inductance and make the incoming AC immune to certain types of EMI/RFI noise pick up.

In various places I've lived though the automatic voltage regulator is what really kept my gear fed consistently well, whether from too low or too high a voltage.

Linear amps in particular may both cause voltage sags and be subject to them.  A regulator will make the incoming AC look much stiffer.

@clustrocasual I’ve used Bryston/Torus isolation transformers for over a decade. The ones I use are listed in my virtual systems. My experience with them: lower noise floor; I prefer the soundstage structure; the system dynamics are excellent. In my opinion, they help the other components in my system(s) to live up to their potential.

You guys crack me up.  @sns  If any of that stuff makes your system sound better then you have some seriously poor equipment. More likely than not a formal AB comparison would show that it did not make any difference at all. I use to think it was just expectation bias, but now, given my own feelings when I have gone down the wrong path, it is avoidance of buyer's remorse. "I just spent all that money. It's got to sound better!" My last mistake cost me $13,000 and three months wiring, rewiring, resistors, no resistors, more resistors, two transformers and finally one transformer. Not isolation transformers, step up transformers. 

@mijostyn ASR isn't worth a minute more of my time.