For example, if you find pots from late ‘64 and transformers from early ’65, you can be pretty sure your amp is a 1965.
The following chart, was originally printed in VG magazine, by Gerald Weber.
After reading Teagle and Sprung's excellent Fender amp book, I took them up on their challenge that maybe someday someone will compile enough serial numbers so that Fender amps can be dated that way. I contacted several Fenders collectors and dealers who were kind enough to supply me with data.
I turned to the Internet to do some more networking which resulted in a major turn of events as I met two individuals who have become instrumental partners in this project: Greg Huntington and Devin Riebe.
Greg is a long time Fender collector who is very knowledgeable not only in the details, but in the circuitry as well.
His particular area of expertise is in Fender amps made from about 1960 through 1967.
The Fender Pro Junior III amp is a perfect choice for home, stage or studio.
The tubes are all Fender/Groove Tubes/Sovtek and are almost certainly the tubes that came with the amp from the factory. I also don’t want Jensen “vintage” or MOD, or the Weber Sig.If you want great blues tone crank up your volume to 8-9 set your treble at 6-7 and your middle at 6 then use your master volume at about 3-4 reverb on 3 this lets you over drive the amp to get great tone.Oh I forgot the bass settings about 8-9 if it is still to load for the house use your volume knobs on your guitar.check out video at Texas blues alley for a great demo. By entering this site you declare you read and agreed to its Terms, Rules & Privacy and you understand that your use of the site's content is made at your own risk and responsibility.The other day I spotted a MIM (Made In Mexico) Fender Pro Junior at a very fair price on Craigslist, so I snapped it up. The speaker in the Pjr is a 10-incher, two inches smaller than in the Bjr, What the two amps share in common is basic circuitry: 15 watts, two EL84 power tubes, a solid state rectifier, 12AX7 phase inverter, and a 12AX7 preamp tube.I owned a Blues Junior amp a few years ago but did not like it much. So now I’ll take a shot at its simpler little brother, the Pro Junior. They also share the EL84’s tendency to sound trebly and to chime when driven hard. Be that as it may, the Pro Junior is a pretty popular harp amp. For the preamp tube I’ll start with my favorite, the NOS JAN Philips 5751.