Princeton Reverb Reissue Modifications

$ 79.95

One of Fender's most classic amplifiers remains a favorite to this day and the Princeton Reverb Reissue is perhaps the most successful of the reissue series. Our mods take the PRRI back to the glory days of the blackface era and adds a couple of the most famous mods done to this amp over time. There is an unused power node in the Princeton that many think Fender did on purpose so it would not compete directly with its big brother Deluxe Reverb. The phase inverter in your Princeton Reverb Reissue shares it's power supply with the preamp tubes. This dulls the sound fed into the power tubes and doesn't fully allow the amp to shine it's perfect tonal light to the world. The good news is Fender left the appropriate power rail for that phase inverter in the design even though it goes unused!

But not for long... 

Our complete mod kit comes with full color instructions and allows you to change the power supply of the phase inverter to the unused anode in the power filtering circuit. This mod is commonly known as the "Stokes mod". It also changes the phase inverter tube from a cathode bias to a fixed bias, known as the "Paul C." mod. These mods work wonders to increase clarity and clean headroom, increasing the overall output of the amplifier with more depth and added transience.

This kit also upgrades components in the tone stack to higher quality metal film resistors, WIMA and MICA capacitors for tonal improvements and improved efficiency in the circuit.

Included in the kit are all of 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.

"Have us Install" price includes parts and labor. We will bill you return shipping upon installation completion and which will be comparable to the cost of shipping it in. You can view USPS Parcel Select shipping rates HERE . Since we're located in the Pacific Northwest you can calculate shipping cost by how many zones it crosses to reach us from where you ship it from.

Click here for info about sending your amp in for modification.

 Please Note: the Supreme Kit is the ultimate tonal upgrade for your amplifier and is a combination of both our "Mod Kit" and "Recap" kit.  All of the components from both the "Mod Kit" and "Recap Kit" are included with the Supreme kit


WARNING: Performing these modifications WILL void the warranty on your amplifier. Working on amps can be deadly if you do not take proper precautions. Follow these instructions very carefully. If you are at all unsure of your ability to perform these modifications STOP and take your amp to a professional to be modified. You can also send your amp to me for modification.


No Warranty: This kit and the instructions included do not include any warranty of any kind. The modifications to your amplifier are at your own risk and you agree to completely hold harmless the seller of this kit against any and all claims. Tube amplifiers contain parts that operate at very high temperatures and deadly voltages. If you are not sure of your abilities to perform these modifications then do not perform them.



All orders are processed within three business days, however, international shipments may be delayed up to six weeks depending on customs.



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