I've had the SP100's for a few years now and have used them with a Jolida JD-302B amp, Audio Research CA50 integrated amp, and a YBA Integre Passion.
My thoughts regarding your question:
1. I would strongly not recommend the Jolida.
2. I was very satisfified with the Audio Research/SP100 combination.
3. Overall the YBA amp does the best and would highly recommend it. Sorry that this does not meet your tube criteria.
4. P.S. I still have the Audio Research CA50 (i.e., I think that it is an excellent amp), but generally believe the YBA works better with the SP100's.
Hope this helps.
My thoughts regarding your question:
1. I would strongly not recommend the Jolida.
2. I was very satisfified with the Audio Research/SP100 combination.
3. Overall the YBA amp does the best and would highly recommend it. Sorry that this does not meet your tube criteria.
4. P.S. I still have the Audio Research CA50 (i.e., I think that it is an excellent amp), but generally believe the YBA works better with the SP100's.
Hope this helps.