Ohm Walsh Micro Talls: who's actually heard 'em?

BTW, there is a Musical Fidelity A308CR amp up for sale here currently from a local seller for $1500 that I am strongly considering as a step up from my current A3CR. Wyred 4 Sound has a B stock st--1000 demo unit available also for about $1800 ($2000 list).

I'm open for thoughts on that if anybody has an opinion?

Another high current/poweramp option I have considered for quite a while to open up dynamics further with my OHM 5s in particular is the Musical Fidelity 550K SuperCharger. The price of these has come down quite a bit over the last year or so, as expected, and these are now an option I could try.

I like what I have read about these, but have not heard many testimonials from owners that have used them as "superchargers".

I like that these have their own separate power supplies in addition to the source amp they supercharge that might result in being able to draw more current than any other option I have looked at, which is good. I might be able to place these on a separate circuit in my basement for use with the OHM 5s only, which are really the only speaks I have that I think worth beefing up with more power at this point. The flip side is that these apparently provide a lot of current (100+ amps) but do not double well into 4 ohms compared to most other amps I have looked at.

Problems, problems. I guess I'll just stand pat for now.

In terms of utility, I think the Wyred Class D and MF 550K supercharger options are the ones I am most comfortable with at this point. I really do not want to have to deal with any humongous 100 lb monster sized amplifiers, which is one of the reasons I still am hesitant to change in that the A3CR is not too big and does sound really good as is. I am craving to hear what the big boy amps might do for dynamics overall though!

Yikes, I'm thinking maybe I made a mistake getting the Bel Canto!

It hasn't arrived yet, and I'm still looking for a tube preamp. But here's the rub: now I see that the Bel Canto S300 has an input impedance of "only" 10K ohms, and everybody seems to say that you'd want the output impedance of the preamp to be "much smaller" (whatever that means) than the input impedance of the power amp. I don't really understand any of this, but can somebody help me, here? Did I blow this purchase? (The folks over in the Amp forum haven't been all that much help, so I turn to you, my Ohm buddies...)

Rebbi,

On paper, that is true, but specs are only guidelines I think in any particular case you have to try it and see (or actually hear) how it compares to what you had.

Once you have good stuff to start with, upgrading becomes more of an experiment almost at first, and your Unico was a pretty nice piece from what I have read (I've considered buying one myself for my second system on occasion, same true of teh Bel Canto gear).

Rebbi,

Don't sweat it. There are lots of tube pre-amps with lowish OI. If you're nervous, compile a list and shop from it. (You might want to start with Quicksilver, they will drive anything.) Tube pre-amps with buffered output stages are sometimes designed with just this issue in mind, you can always look there. Finally, even though tubes may well be appealling, they are hardly a requirement. Why dismiss a good ss preamp? The Bel Canto instantly comes to mind!

Marty

Marty