im looking for someone that would he willing to redesign a vas stage of a amp to use tubes instead of the bjt that it currently uses. Pay of course. If you interested please let me know. Im sure it might be silly but i have quite a few of these mosfet monoblocks and im currently using a 6922 tube preamp on the unity gain ouputs and i really like the sound. Seams like ot would sound better have a tubes go directly into the mosfet output stage vs through bjt's then onwards. Thanks.