Valve Amplifier Filter Replacement Sets

Fender Tremolux & Vibrolux (AA763 / AB763 Circuits)

Restore the original headroom, dynamic punch, and low-noise operation of your vintage Fender Tremolux or Vibrolux (AA763 & AB763 circuits) with this premium filter capacitor replacement set from Evatco.

Over time, electrolytic capacitors in vintage tube amplifiers dry out, leak, or fail—causing unwanted hum, ghost notes, loss of punch, and potential damage to power transformers. This re-cap kit provides high-reliability, long-life electrolytic capacitors specifically matched to the requirements of 1960s Blackface and early Silverface AA763/AB763 chassis.

Circuit Compatibility

• Amplifier Models: Fender Tremolux / Fender Vibrolux / Vibrolux Reverb

• Circuit Specs: AA763 & AB763 (Blackface Era & early Silverface)

• Application: Main power supply filter cap pan replacement & bias/cathode supply recap.

Parts in this set

Default Parts included are as below however several parts are available in other brands we carry, including Evatco own home brand (at times), so you can add these if you wish to save

• 3 x F&T 22uF-500V
• 2 x F&T 80uF-450V
• 1 x F&T 25uF-70V
• 5 x Sprague 25uF-25V
• 1 x 1K-2W Resistor
• 1 x 4.7K-2W Resistor
• 2 x 220K-1W Resistors

Key Features & Benefits

• Direct-Fit Specs: Specially matched voltage ratings and capacitance values for Fender Tremolux and Vibrolux AA763 / AB763 circuits.

• Reduced 50Hz/60Hz Hum: Eliminates background power supply ripple and background buzz for an ultra-quiet noise floor.

• Restored Tone & Dynamics: Delivers tight low-end response, crisp transient attack, and clean headroom.

• High-Temperature Rated: Premium high-grade electrolytic capacitors engineered for demanding tube circuit environments.

• Aussie Stock & Local Support: In stock in Australia at Evatco for fast nationwide dispatch.

Benefits of Recapping Your Vintage Amp

• Eliminate Mains Hum & Noise: Aging 50+ year-old filter caps lose tolerance and leak DC voltage, introducing frustrating 50Hz/100Hz background hum into your signal chain.

• Restore Tight Low-End Punch: Fresh filter sets restore tight, controlled bass response and preserve crisp transient response during high-volume playing.

• Protect Output Transformers: Dried-out or shorted power supply capacitors are a primary cause of blown rectifier valves and burnt-out power/output transformers.

Premium Components for Classic Tube Amps

Every EVATCO filter replacement set features trusted, high-voltage electrolytic capacitors (such as F&T, Sprague, or TAD) matched to the precise values and physical dimensions needed to fit original chassis doghouse enclosures smoothly.

Order your Fender Tremolux & Vibrolux AA763 / AB763 filter capacitor replacement kits online today. EVATCO offers fast delivery across Australia and worldwide shipping for all your valve amplifier parts and restoration needs.