For a pure tube design have you thought of some of the older Conrad Johnson models such as the premier 1,4 or the mono model premeir 5..they posses plenty of power for your needs and the company is around for future upgrades and if needed repair..good luck ..
I need an all Tube Amp.
In the $2000-$2500 range. I have Audible Iluusions L-3B and NHT 2.3 speakers. The Sensitivity and power rating for the speakers are 86 db, 200W maximum and are 4 ohms nominal, 2.9 ohms minimum. I currently have Hafler 9270 amp. I have heard NHT require a lot of power so keeping that in mind what would be the best amp to drive these. Thanks.