Report Review for product Vacuum Tube - ECC803 / 12AX7, JJ Electronics, Long Plate

I compared several 12AX7 tubes and thought, especially at this price, that this tube is very good. It's maybe a bit muddier than the Mullard CV4004 but that may be handled through tone controls. I wasn't adjusting between tubes to try to get some continuity in comparison. I also tried the JJ E83CC which I thought was shrill, brassy, unpleasant and much more expensive.