Tubes for 300B amplifiers:

Sophia Electric Royal Princess™ 300B tube
NEW Royal Princess™ 300B
Sophia Electric rigid S.E.T. Princess™ 300B tube
Carbon Princess™ 300B
Sophia Electric S.E.T. Princess™ 300B Mesh tube
S.E.T. Princess™ 300B Mesh Plate
300B mesh tube
300B globe mesh plate


Tubes for 2A3 amplifiers:

Sophia Electric rigid S.E.T. Princess™ 300B 2.5Vtube
Carbon Princess™ 300B 2.5V
Sophia Electric S.E.T. Princess™ 300B 2.5V Mesh tube
S.E.T. Princess™ 300B 2.5V
300B 2.5V mesh tube
300B 2.5V mesh plate tube
Princess 2A3 mesh tube
Princess 2A3 mesh plate tube
2A3 mesh tube
2A3 mesh plate tube


845/211 MK3 tubes:

Sophia Electric™ 845 MK II tube
New 845 MK3
Sophia Electric™ 211 tube
New 211 MK3


45/50/PX4/PX25/274B/300B+/205D/Princess 206 tubes:

Sophia Electric 45 mesh plate tube
45 mesh plate tube
Sophia Electric 50 mesh plate tube
Princess 50 mesh plate tube
PX4 tube
PX4 mesh tube
PX25 mesh plate tube
px25 mesh plate tube
274B tube
274B/274A tube
300B+ mesh tube
300B+ carbon plate tube
2A3 mesh tube
205D rigid & mesh tube
Sophia Electric S.E.T. Princess™ 206 tube
S.E.T. Princess™ 206

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