Fromel Supreme Mod Kit for Fender Pro Junior Jr.

★★★★☆ 4.0 62 reviews

US$39.98
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US$39.98
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Free shipping Free 30-day returns

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Management number 228092976 Release Date 2026/05/31 List Price US$39.98 Model Number 228092976
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Unleash the tone of your Pro Jr with the Supreme Mod Kit from Fromel Electronics! The Fender Pro Jr is a great value and a good sounding little amp, and with a little help can be a GREAT little amp. These mods will make your amp more reliable, have less noise and better tone. If you want a total tonal transformation, this is the mod kit for you, it replaces every cap and resistor in the signal path with F&T, WIMA, MLCC, and audio quality caps and 1% 1/2 Watt metal film resistors for Low Noise and Precision performance. Additionally, the recap kit upgrades every tone-critical electrolytic cap in the circuit with high quality F&T and audio quality electrolytic caps. All the capacitors in this kit were specially chosen for great tone, reliability, and accurate fit in your Pro Jr. Please Note:The Supreme Mod kit includes both the "Complete Mod Kit" and "Recap Kit" that we offer and is the ultimate tonal upgrade for your own amplifier! 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. Included in this kit are the following upgrades: Tone Stack - Replace the wimpy Bass and Mid caps with high quality caps with corrected values to open up the tone and get rid of that boxy sound. What about the Treble cap, replace the ceramic cap with a high quality MLCC cap. The adjusted value shifts the mids up very slightly, the result is an amp that sounds huge and warm, not boxy and thin. 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. Input Jack Module - 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 enclosed jack mounted on a separate board and NOT directly soldered to the circuit board. 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 Pro 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. Electrolytic Cap Upgrade - replaces all of the caps in the circuit chain with new and upgrades parts. Older Pro Jr’s that are made in the USA are all getting due to have their filter caps replaced and many of the current Pro Juniors made in Mexico are known to have leaky filter caps. The Fromel kit rectifies these issues.

  • Boutique tone at a working musicians price
UPC 634855697834
ASIN B0DK2JFC9H
Brand FROMEL ELECTRONICS
Manufacturer Fromel Electronics
BuiltIn Media CAPS, RESISTORS, ETC
Mfr Part Number PJSUP
Warranty Description 1 Yr Parts
Item Dimensions D x W x H 6"D x 3"W x 4"H

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