Hi Dewinkle - I went through your same debate about 12 months ago. I had a solid state Threshold S/250 (125w/c) and FET9/e preamp driving Alon II speakers and had used this combo together for 12 years. The Alons are 87db and recommend 175w/c as a minimum. The high current Threshold had no issue driving the Alons to house shattering levels. As my search for a "tube" solution began, I quickly realized there are not many tube amps > 175w/c that mortals can afford. Also, my stereo rack did not allow space for monoblocks so I needed a stereo amp.
The Threshold/Alon combination had great bass response and sounded super with rock music. However, with jazz, instrumental and classical, I felt like I was missing something.
I first added a Mac C2200 tube preamp and it "smoothed" out the sound quite a bit. After adding the preamp, with good results, I just had to try a tube amp as well. After much deliberation, I added a Mac MC2102 (100w/c) tube amp. The Mac combo delivers 90-95% of the bass response I was used to, but the difference in instruments and vocals was phenomenal.
Tubes will be a little more expensive over the long haul, however, I do not regret my changes one bit. I cannot address your "power hungry" Theils - never had the opportunity to hear any.
Just my 2 cents - Good luck in your seach...
The Threshold/Alon combination had great bass response and sounded super with rock music. However, with jazz, instrumental and classical, I felt like I was missing something.
I first added a Mac C2200 tube preamp and it "smoothed" out the sound quite a bit. After adding the preamp, with good results, I just had to try a tube amp as well. After much deliberation, I added a Mac MC2102 (100w/c) tube amp. The Mac combo delivers 90-95% of the bass response I was used to, but the difference in instruments and vocals was phenomenal.
Tubes will be a little more expensive over the long haul, however, I do not regret my changes one bit. I cannot address your "power hungry" Theils - never had the opportunity to hear any.
Just my 2 cents - Good luck in your seach...