Any comments on Jeff Rowland Design Model 9

Suggest you consider the new Parasound JC-1 mono blocks. Lots of threads on this site and audio asylum. Good luck.

Although i might be new in this site, i have had the 9's for almost ten years, i remember that i was forced to make the choice between the 8 and a pair of 9's: after two weeks of close listening to both, it came apparent to me and to a group of experienced listeners that the 9's sound indeed had a faster " pace", a wider soundstage, and a heavier bass than the Model 8. If i could, i would go for the 9 Ti, but times have changed, i would happily trade my nines for an 8, just because of the money, keeping in mind that i would still keep the Rowland glorious sound in my system. One last thing: if you don't have a matching Rowland Preamplifier, you are wasting more than half of the experience!... and that's final.

I spoke Rowland a couple days ago and he says that model 9 can be upgraded to 9T, however, 9 or 9T cannot be upgraded to the 9Ti - vastly different circuitry.

what is the sound diff. from the 9T to 9TI?