Sophia Electric Blue Glass 6SN7 Tubes

valvole eccezionali..

As described and quickly shipped .

Too soon to give complete review, but initial impression is very good! Sue said said this was a special tube and the worst tubes I’ve had from Sophia are very, very good - but this one does seem special - I am using in a Feliks Envy/Performance Upgrade Edition that came with Full Music 300Bs, I thought this might be the same tube but it sounds markedly better, again keeping in mind nothing is broken in yet.