Toshiba 6GB8 Vacuum Tube possible 8417 & EL34 sub-tested with Amplitrex-Sencore

- Best suited for tube amp enthusiasts or technicians needing tested vintage output tubes; seller specializes in audio tubes with documented testing methodology.
- Used condition; tubes were tested on Amplitrex for performance specs and Sencore for grid leakage, gas, and shorts—check seller's test results documentation before purchase.
- Seller has 3733 feedback ratings at 100.0% positive over established tenure in audio tube sales.
- Free shipping included; in stock and ready to dispatch.
- Toshiba 6GB8 tested to datasheet specs; possible compatibility with 8417 and EL34 applications requires your amp's tube manual or schematic verification.
- Confirm tube test certificates or detailed results are included; ask seller for specific Amplitrex/Sencore readings if critical for your amp's bias or performance matching.