Fromel Complete Mod Kit for Fender Blues Junior Jr. Made in USA Version I

Unleash the tone of your Blues JR with these modifications from Fromel Electronics!

From the factory, this pint size wonder has a lot of potential, but
with some select Fromel tweaks this amp can stand toe-to-toe with some of the finest boutique amps on the market.  After the mod, the amp boasts clean, sparkling top end, a huge sweep of mids and rich bass response.  The smooth, slightly compressed tube breakup stays articulate thanks to improved power filtering and upgraded tone caps.  The reverb is also made more lush and rich, with smoother decay.

Included in the kit is all the components necessary to to get your amp in top shape and the detailed instructions to make the changes easy. If you have a basic understanding of electronics and soldering skills you can do these mods in a couple of hours. These are the upgrades we offer for the Blues Jr.

Complete Kit:

Tone Stack - Replace the wimpy Bass and Mid caps with high quality WIMA caps with corrected values to open up the tone and get rid of that boxy sound. The leads on the caps are pre-formed to insure a perfect fit. What about the Treble cap, replace the ceramic cap with a high quality Silver Mica cap. The adjusted value shifts the mids up very slightly, the result is an amp that sounds huge and warm, not boxy and thin.

Twin Mod - Fix the mids on the amp and get rid of that flabby bottom. This mod enables you to take all the mids out of the tone allowing more flexibility and versatility. This is accomplished with just a short jumper wire but the result is far better control of your tone.

Power Stiffening - Doubles the capacitance in the first filter stage, this reduces hum and increases reserve power for solid bass and strong picking, This mod gives the amp the extra torque it needs to push through strong when you are playing hard.

Cooler Bias - You are cooking the output tubes in your amp. This mod lets the amp run cooler without sacrificing tone or drilling holes in your PCB. Your tubes should live a long and happy life after this mod. I include a new bias
resistor that sets the idle on the tubes to about 8.5w which is right
where it should be.

Switchcraft Input Jack - Your input jack is soldered directly to the circuit board, apply some tension when the amp is plugged in and you could cause major damage to the circuit board in the amp. This mod gets rid of the wimpy plastic input jack and replaces it with a high quality metal switchcraft jack that is panel mounted and NOT directly soldered to the circuit board. Included is a
shoulder washer and isolation washer so the input jack does not ground
directly to the chassis and prevents ground loops. The jack comes pre-wired with high quality, Teflon Coated, Silver Plated Solid Copper Core wire. The solder I use is Silver bearing. This is the same quality you will find in high end boutique amplifiers costing thousands of dollars.

Proper Lead Dress - Take a look inside a boutique tube amp and you will see all the wires carefully twisted and placed for greatest reduction in oscillation and noise. The Blues Jr has all the internal wires zip tied together. I give clear instructions on dressing the leads inside the amp for optimal performance, this results in lower noise and less chance for oscillation.

Reverb and Tone Mod -  for older Blues Jr's. The reverb on older Blues Jr's sounds horrible, this mod changes the reverb to the design of the newer Blues Jr's. If your Blues Jr was made before 2001 the reverb sounds pretty bad. This mod fixes that to produce that lush classic reverb tone that made Fender amps famous. In the oldest Blues Jr's (made before 1996) the tone is dark, the tone mod brightens up and adds more clean headroom to these first versions of the Blues Jr for a great improvement in tone.

Make sure to order the correct kit for your amp: If your amp was made in the USA order the "for USA" version, if it was made in Mexico order the "for MIM"version.

Your purchased kit may not match the photo, we use only the highest audio quality parts and upgrade the parts used in the kits often for the best quality!