Good upgrade amp for my Thiel 3.6s

To Bryhifi:

I did look into bridging the KSA-150s to mono and had a chance to pick up a second KSA-150. I thought Krell didn't do it anymore. I spoke with a rep. there and he said they didn't offer that service on older amps like that.

Was I mislead?

J

I had my amps done just about 2 years ago. As far as being misled, I'm not sure? Like I mentioned mine were done a little while ago (6/00). They may have run out of the parts needed to convert like the new face plates and rear panels. Sorry about that, I didn't know they had stopped. You did see the MDA-300's here for sale by "Fsdizon".

Classe amps seem to be popular with the Thiels but my experience with a CA-200 was not as good as the Krell KSA-150. The CA-200 performed quite well but gave up a little too much resolution around the instruments and also lacked the spatial, pinpointed soundstage that the Krell offered. The Krells seemed to remove the boundries of the walls and opened up several more feet to the outside of the speakers.

If you really like the resolution of the KSA-150 then I'd suggest trying their older mono blocks but make sure you are willing to run dedicated 20 amp service outlets for these amps or they will not rise to their full potential. They are powerful amps but need "homeruns" to the breaker box to supply pure power and not degrade the supply to the front end components. This alone made a huge difference in my KSA-150's performance and would not have even thought about trying the MDA-500's to regular circuit outlets. This would stand true for any mono block setup of real substance!!

Bruce

Justin, what preamp are you using? If I missed it above, sorry. A really good preamp really shines through the Thiels. I'm driving my 3.6's with classe ca200 and cj premier 14 with Mullard tubes - more than enough power. Great soundstage, awesome midrange,good extension on the bottom, the only thing that might be missing with Classe ca series is ultimate extension and energy on the very top. I think you get that with the cam's and 01 series starting with 301... good luck.

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.