Smooth Top, Present Midrange, Full
I needed to update the Tubes in my SPL Tube Vitalizer. So I got in touch with SPL. André recommended this JJ ECC803-S for a high end tube compatible with the Vitalizer circuit. Much, much better than the Sovtek 12AX7LPS stock tubes. Smooth, full and creamy! I was going to spend the money on NOS tubes, but I'm glad I didn't because these JJs are fantastic!