5931 Sylvania triple mica "D" getter used/tests like new 1955 in white box (56/40 and 56/40)
$ 59.99
5931 Sylvania triple mica "D" getter used/like new 1955 - scrapes on base - in white box
56/40
56/40
5931 is a premium 5U4GB
Recommended for
- SET amps
- Wright Sound SET
- Audio Note P4 Balanced mono amps
- Dared MCP7 preamp with phono
- Singlepower
- Modwright Transporter
- Donald North Audio
See more: vacuum tube