Anyone using the Transistor Research LabsM 225's

Tvad - yes I have communicated with them. They are a great bunch. They are helping with tweaks etc.

Corrections. The M225 and Samson are not identical, the latter using a new power supply.

If these are Class D amps they eclipse every D amp I've heard. I'm intimately familiar with the Class D fingerprint and this isn't it, tempting to say by far. Paul told me the first ~10 watts are class A. This is consistent with very low level performance. Milliwatts sound identical to power levels at much greater SPLs. No contraction of soundstage depth or width, etc.

Maybe it leaps over to Class D at > 10 watts??

Bass control, weight .... everything bass is stunning.

I will submit a review after 500 hours, but I could go on and on. I've yet to find a flaw. They are highly SC sensitive.

Try Ken Bonfield's American Baroque: Steel String Surprise through these devices. My most intense musical experience to date.

Yes, the bass is simply unmatched by a wide, wide margin compared to all I have owned. Paul said this to me and he is so right. I can now follow bass lines that were either blurred or even silent in my passed systems.

Paul has many of his own recordings which he knows like the back of his hand. At least he thought so. These new amps reveal aspects of his self produced records which he now hears for the first time. He and Brian played recording after recording so excited by Samson's power supply. They were like children having so much fun!

The power supply is the key! Paul's circuit design, wire and overbuilt parts are also key.

My Dude preamp has the same power supply design and does bass better then any SS or tube preamp my lucky ears have heard. The bass coming out of the Dude is remarkable to say the least. The two units together are pure musical heaven.

Since my D-225 is for sale, I wasn't going to post here. I didn't want it to look like I was promoting my ad. But since Tvad already mentioned it, I'll throw in my opinion.

I owned NuForce Ref 9's & Ref 9 V2's for about 1 1/2 years. I really enjoyed them, the detail and especially the bass, was better than anything I had previously heard. And for the money, they were a bargain. The only downside (for me), they weren't the most "musical" amps.

After the NuForce amps, I bought a Belles 150A Reference. Again, I really liked this amp. Not quite the bass of the NuForce, but more musically involving. This was going to be my last amp and I was hoping to buy a second and use them as monoblocks. Then the I saw the TRL D-225 for sale.

Enter the TRL D-225. Whole new world! As someone else wrote, all of the typical audiophile adjectives fail to do justice to what I heard. It just sounds like music. Unmatched low-end control of my Vandersteen 3a Signatures and absolutely, positively dead quiet. Crazy quiet. Paul recently contacted me and offered to upgrade mine to the new power supply, which according to him, will make it quieter yet.

I have no inside knowledge and I haven't opened mine up, but for what it's worth, the D-225 does not sound like a digital amp to me.

Grannyring and Ecruz if either of you ever hear the SE version of the Nuforce Reference 9V2 I would be very interested in a comparison to what you are hearing with the TRL products. I recently acquired the SE version and they sound quite musical to me, not cold or warm, more like neutral. Chris Martens, reviewer for Absolute Sound, for example, has followed the evolution of Nuforce and reports Dec 2008 that with the V2 SE, Nuforce finally reached a "high level of sweetness that is intimate focused and pure".