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5U4GB RCA used/good 1968 (56/40 and 57/40)

5U4GB RCA used/good 1968 (56/40 and 57/40)

$ 24.99

5U4GB RCA used/good 1968 (BW)

56/40

57/40

 

Tested on TV-7D/U


 

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
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