An Ampmart SO45 panel meter (DC 100MV, black face) sized for 300B, 2A3, and 845 tube amplifier builds. A genuine analog meter movement for monitoring bias current or plate voltage on these classic single-ended triode amp designs — essential instrumentation for anyone building or maintaining a 300B/2A3/845 amp properly.
Pairs naturally with our vacuum tube and tube socket inventory for anyone assembling a full amp build from parts.
