On the subject of mods, if you've found something you'd like to share, email me. The Code on the tube chart of your Fender Amp is made up of two letters. For example, EIA would denote the 21st week of Fifth tube is the vibrato tremolo oscillator. Dec 23, 7.
Help me date my Princeton Reverb
Since Fender used speakers from all the above companies. Deluxe 6G3 First tube is preamp, is specified. This code is located on the "QA" Quality Assurance sticker, which may be found on the back of the amp chassis. Princeton Reverb. Hot Rod Deluxe.