YES. I have a highly modified (Robert H. Backert mod) Musical Design SP 2B Pre with 6922 output tubes. It's been a work in progress for the past several years. We just added the Teflon/Tin Foil V-Caps in the output stage and the results were nothing short of amazing- to an already world class sound, actually besting anything I have ever heard. I recommend the V-Cap addition very highly.
Has anyone upgraded their preamp with V-caps?
I am interested in hearing about anyone's experience with upgrading their preamps with V-caps (in the output circuit). They are very expensive, i.e. 600.00 for two 2.0uF. I have heard that they are amazing caps and make a huge audio improvement, particularly in the bass and midrange.