Jeff Rowland 201 or 501 for high current demands

I have heard that these amps are a good bit more dependent upon the quality of the power supply than amps with analog power supplies, i.e., if you intend to really push them, you need to make certain that the circuits they are on are not burdened with other electrical devices (or run them on dedicated circuits).

Is that true?

I have the 501s and they work very well with Wilson Alexandrias, which need alot of current to sound best. In my experience, these amps need a long break-in period (e.g., at least 600 hours), dedicated lines, high quality power cords and a power conditioner that doesn't limit current. I've had excellent results with Elrod Statement cords and the Isoclean Model 80 A3 conditioner, which can pass 80 amps of current.

My Legacy/Coda Monobloc amps are said to have the ability to deliver 90 amps. I do have a dedicated 20 Amp circuit and am using shunyata power products. I am just kicking around the idea of changing amps, but whatever I get, I want to be able to deliver high current.

I have to find a place to hear these things!

My H2O Signature, another ICE module amp, is rated 45 amps too. I think that is an average reading. The H2O utilizes a very large analog power supply. That may provide the amp with even greater current. All I know is, my amps have more than enough juice for a near dead short, which is what my speakers happen to be.

So what is truly important when evaluating a potential amp...before listening that is?

The problem is, you cannot always get different amps connected to your same speakers for evaluation.

There is wattage output, voltage output, and amperage output numbers from many manufacturers. How does one make sense of it all, or should you just trust reputations?

My speakers (Legacy Focus 20/20 (back off sean)) are said to want high current amps and are rated at 4 ohms.

I have been kicking around the idea of getting a class A amp, but I keep seeing the digital amps and how many people like them.

Obviouly, I don't know much about this stuff and am just looking for information.