Anyone using the Transistor Research LabsM 225's

Tvad, I suspect that your suspicions are correct :)

All of the Class D trademarks are present. The sound, the lack of heat, the efficiency, and the price, all add up to scream Class D!

Fiddler, so are you saying that these are Class D amps or that these just sound like Class D amps?

FWIW, I've heard a few Class D amps and while they have sounded very good (especially for the money), none exhibited the sound of my TRL D-225.

I have found the Class D amps I have heard to be very transparent, neutral, and they are very efficient. However, they lacked a very key component IMO to what the TRL offers and that is presenting the music in a very natural life like manner. There could be Class D amps that do this, but none that I have heard. I think its why tube preamps are a good match for Class D amps.

Tvad and others with interest. For some time due to intellectual property concerns the D-225/ST-225/M-225 amps were "locked down" and unable to be opened. Now that those concerns have been addressed the amps innards can be viewed. I was just on the phone with a new Samson owner the other day who gave me a very detailed description of what was inside. From my previous knowledge and experience it was consistent with what I already knew and provided some additional insight on the design.

And what did you find out, Clio?

Well I have the amps in my home per the review. Yes, one can take the cover off and look inside if they want.

These are Class A/B and not Class D. Not sure why Fiddler suggests some of us (owners) are not telling the truth?

Tvad, you had mentioned you did not care for the Nuforce amps and thought that (Class D) may be the type of amp and sound of the Samsons. This was the reason for my short comparison. Clio09 also gave some spot on differences in the sound quality of Class D amps vs and these Samson amps.

Paul's has designed a new power supply that is greatly responsible for for the ground breaking musicality of these amps.