Good upgrade amp for my Thiel 3.6s

To Pops:

I'm using the Adcom GFP-750 preamp.

Justin, a new thread has been started by David99 that you might find interesting: "NAD takes on the Krell beast.." And thanks for elaborating in response to my question. All the best.

I have the Thiels 3.6 in my system for over 4 years now. Prior to that, I had the 2.2s for 5 years. I've had the Krell KST-100, Pass Aleph Os, and now the Levinson #333 mated with the 3.6s. The Thiels are very revealing speakers. What makes or breaks them is often the components in your system. I had the Krell connected to the 3.6s for a week, and took it aside right away. It sounded cold, bright and a bit harsh in my setup. The Pass was only 60 watts and it can actually drive the 3.6s in low volumes quite well. Of all three amps, this one sounded the sweetest, and musical. (Prior to the arrival of the Levinson, this amp stayed in my reference system for a while. It then got moved to the bedroom) The Levinson sounds very refined, detailed, and excellent soundstage width and depth, good control of bass, and instrument placement. This amp is a bit lay back. So you don't get the music "in your face". So if you like to sit in the first three rows in a concert. This is not the amp. But if you typically sit in the center of a theater, the Levinson would be a good choice. Cable is important. I use MIT balanced interconnects throughout my system, and Transparent Ultra speaker cable. I heard a lot of recommendation on the MITs. I had tried the MH-770s, and the sound is a tad darker than using the Transparent.

I bought mine used and the guy threw in the Sound Anchor stand for the Thiels. I think the Sound Anchors works great at controlling the bass!

System:
Michell Orbe SE + SME V + Benz M2 Turntable
Levinson #37 Transport
Genesis Digital Lens
Sonic Frontier SFD 2 Mk II D/A
ARC PH3 SE phonostage
ARC LS2B Mk II preamp
Levinson #333
Thiel 3.6
PS Audio PS300, Electraglide Referenceglide PCs, Marigo Reference PC.

My room is about 18' x 21'. Good luck!

Anyone have success with Threshold and Thiels? I see one guy on Audiogon is selling a Threshold T-200 that he matched with Thiel 3.5.

To Gundam91, Levinson sounds like a nice choice, but pricey.

I would go with Classe or McIntosh. I have listened to a Classe 400 on CS2.2s extensively and I loved it - very impressive. The owner of the 2.2s now uses a MC352 and I find it is at least as good as the Classe. I had a KSA-150 driving my Paradigm Reference 100s and (happily) got rid of it for a McIntosh too.