Finally, meant a special high-quality tube in the past--it no longer means much today. 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. Dating by serial number, while less accurate, can be of some use. Not sure if the amp has a PPB yet. May 31, November 29, admin 29 Comments.
Past that point, the amp starts to overdrive in a limited way and obviously with the MV you can manage the overdrive at sensible volumes.
Dating my Fender Silverface Twin Reverb
I have three Silverface amps. NathanYNov 30, They drive the output transformer, then the speakers. This is the channel 1 preamp. Rectifier tube is 5Y3GT. Check the EIA number.