Here's my experience in brief... To paraphrase what Rrog said, if you want true power conditioning get a generator; nothing else comes close or completely solves the problem, not even so-called dedicated lines, unless you are wired directly from a separate winding in the utility's power transformer - something that doesn't usually happen.
I do plug in my amps to a power "conditioner" - an MIT Z Stabilizer - but it's because they employ parallel conditioning, which can still get in the way, despite the fact that all they do is convert some line noise to heat. So how can it get in the way? Simply, the parallel circuits alter the line impedance, therefore amps may or may not be immune to that. The MIT Z Stabilizer that I use also touts impedance stabilization, which in electrical engineering is a good thing - this was the critical question for me, not the fact that it also reduces line noise (which most such products do, but with all kinds of other ill effects).
In the end, the result is positive with this product and these amps, and this statement cannot be generalized. Bottom line: unless you have a real problem, plug them directly to the wall. Otherwise, prepare to experiment a lot, and I would avoid anything that offers in-series circuits, including isolation transformers.
I do plug in my amps to a power "conditioner" - an MIT Z Stabilizer - but it's because they employ parallel conditioning, which can still get in the way, despite the fact that all they do is convert some line noise to heat. So how can it get in the way? Simply, the parallel circuits alter the line impedance, therefore amps may or may not be immune to that. The MIT Z Stabilizer that I use also touts impedance stabilization, which in electrical engineering is a good thing - this was the critical question for me, not the fact that it also reduces line noise (which most such products do, but with all kinds of other ill effects).
In the end, the result is positive with this product and these amps, and this statement cannot be generalized. Bottom line: unless you have a real problem, plug them directly to the wall. Otherwise, prepare to experiment a lot, and I would avoid anything that offers in-series circuits, including isolation transformers.