Spectron Musician III - Can anyone comment on it?

For those that went from a well broken-in stereo Spectron to monoblock config, how did you manage the break-in process of the new (say left channel) amp? Did you run it as a stereo amp on another system? If so, did you run it loud or soft, does that even matter?

I'd normally run a new piece of euqipment softly and for a long time, when not actually listening, but to "integrate" or "introduce" a brand new amp into a monoblock situation is a different story; I don't want my left channel way out of whack to my right. So I will likely need to put it on a different signal source (easy for me to do; I have a second pre, my surround Continuums, a separate SB3 that i can run in a 24/7 loop, etc.) and wondered what other monoblock converts have done. Thx
Ted

Here is a followup to my post from a few days ago. I've now listened to the Musician III single amp, biamp, and monoblock. Here are my impressions in comparison to my previous amps (entry-level Class D monoblocks, which I will refer to as 'the old monos'):

One Spectron amplifier only: Similar to my old monos (with >1000 hours of use). The single Spectron had more natural and brilliant highs and better overall dynamics and power than the old monos. The old monos had slightly fuller and warmer midrange. I'm told that the Spectron midrange will be changing and improving by 300-500 hours.

Two Spectron in biamp configuration: Very similar to one Spectron amplifier.

Two Spectron in monoblock configuration: Big difference! It sounds like I am using bigger speakers and more sensitive speakers. Notes are more forward, more defined, fuller, and more detailed from attack to decay. Soundstage is expanded in width and depth. Dynamics are increased, and crescendos are more powerful. Also higher frequencies are more brilliant and lifelike than the old monos. I had chills again, which I never had with the old monos.

Psag: What are your old monos?

Thanks
Rafael

The Spectrons are the most incredible high powered amps that I have ever heard and I have gone through or heard dozens. For a power hungry speaker like yours I would highly recommend the Spectrons and if you want to go all out, get a pair and use them as monoblocks. Read the new review just posted by Don Shaulis on Stereo Times regarding this approach.

Rafael,
They are Rowland 201s. Not really a fair comparison, given the switching power supply utilized the Rowland, which is both excellent and practical. The Rowlands are only a fraction the size, weight, and cost of the Spectrons. A more fair comparison would be the Rowland 312, but I don't know if it can be used as a monoblock.

The Vandersteen 5A is relatively sensitive for a speaker of its size and capabilities. As others have mentioned, it will be driven capably by at least some 50 watt amps.