@toolbox149
Vlad has a pair of 5977 tubes soldered together, and attached to a 9-pin adapter, which inserts into a standard 9-pin socket. So there are two pairs of these = four 5977 tubes. What's nice is you can roll a pair of your favorite 6922 / 7308 etc. family of tubes into the T3 if you prefer a diff sound.
Vlad has a pair of 5977 tubes soldered together, and attached to a 9-pin adapter, which inserts into a standard 9-pin socket. So there are two pairs of these = four 5977 tubes. What's nice is you can roll a pair of your favorite 6922 / 7308 etc. family of tubes into the T3 if you prefer a diff sound.