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12AT7s and 12AU7s are not recommended.

BJ White Piggyback Amps Another transitional event at Fender was the development of the two-piece amp in 1960.

12AX7s or 7025s are usable in a pinch.

The solid-state diodes used in older Fender amps are rather primitive compared to modern devices--if you wish slightly better performance, suggest speaking to a service technician about replacing the diodes with modern fast-recovery epitaxial FRED diodes.

This amp became the gold standard of Fender blackface combo amps for the assured delivery of powerful volume and tone for larger venues.

Twin 6G8; Showman 6G14 First tube is first channel preamp, 7025 is specified.

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Upgrade, downgrade, cancel at any time.

5 inch Cloth cone 68.

If you have a later silver-face or blackface Deluxe amp, the plate voltage will be very high--plugging low-cost Russian or Chinese 6V6s into such an amp is risky.