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(!!!!) (Best Quad) 5R4GB GE black base NOS 1981 1% matched

$ 79.99

1 matched quad) 5R4GB GE black base NOS 1981 (MS)

1 tube) 50/40 and 53/40

1 tube) 50/40 and 53/40

1 tube) 50/40 and 53/40

1 tube) 50/40 and 53/40

 

 

5R4GB black base = 5R4GYB with brown base

- tubes plugged into octal sockets in photo

 

- Decware

- DIY

 

(900 rms volt rating per diode section)

See more: vacuum tube
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