I am using black glass Tung Sol's, sound great! I tried them after first trying standard NOS Tung Sol's which sounded so nice and clean, I figured the black glass variant was worth a try. Yes very nice vocals and clean sounding!
I noticed after getting rid of the stock Chinese tubes that the Tubiness knob was clean sounding through all it's range, and not distorting as it was with the original tubes.
I noticed after getting rid of the stock Chinese tubes that the Tubiness knob was clean sounding through all it's range, and not distorting as it was with the original tubes.