Hi Kclone,
As I stated earlier, I am running Keith's M-150's along with the VTSP-2 right now, the preamp being a very recent acquisition and the M-150's being in the system for about the past 2 years. I bought them, without any audition, on a recommendation of an audiophile buddy whose ears I really trust.
To make a long story short, I really like these amps. Again, they are vastly underrated in the audiophile community. No, they won't win any awards for beauty, but they have it where it counts. I have compared them to a Spectron Musician 3 Mk II, Pass 350.5, McCormack DNA-500, and Clayton M-100 monoblocks. The Herrons came out ahead of them all, some by a wide margin, some a little. The one knock on the Herrons is the touch of leanness in the low end that I believe may be due to a limitation in current output (but I may be wrong here).
The only amps I have owned that bettered the Herrons were Atma-Sphere MA2 Mk2.3 monoblocks being driven with an AS MP1 Mk2 preamp. This really isn't a very fair comparison considering the price difference however.
What the Herron amps in my system are natural timbres, lack of grain, great space around instruments, and very good micro/macrodynamics. They are one of the few SS amps I have heard that make strings sound like strings, very important to me as I listen to a fair amount of classical music. If you like tube amps, you might want to give these a try as they have just a hint of tube magic in them as well. This is not to say that they "sound like tube amps."
They certainly did sound better in all ways being matched with the Herron preamp. I won't be selling them anytime soon. They can be had for a song right now also on the 'Gon. I haven't had a single problem with mine in the 2 years I've had them either. Add to that Keith's great customer service. What more could you want?
Bill
