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Vacuum Tubes

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T-6550A-STR6550A STR - Ruby Tubes

6550A-STR, Ruby brand, Power Tube


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T-12AX7A-C512AX7A-C5 - Ruby Tubes

9 pin miniature preamp tube (Amplification Factor = 100). This is the ubiquitous Chinese 12AX7 with added selection. The gain is high and the American "Ruby Tubes" must be filtering out the noisiest ones.


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T-5AR4-C5AR4 - Ruby Tubes
5AR4 Ruby, Rectifier Tube
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T-12AT7-C12AT7 - Ruby
12AT7 Preamp tube, Ruby brand
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T-6L6GC-M-STR-X6L6GC-M-STR - Ruby Tubes
Octal power tube (Max Plate Watts = 30W)
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