Fender Pro Amp AB763 Filter Capacitor Replacement Kit

Valve Amplifier Power Supply Filter Set by EVATCO

Restore original high-headroom clarity, 40-watt punch, and long-term reliability to your vintage Blackface-era amplifier with this specialized Fender Pro Amp AB763 Filter Replacement Set from EVATCO. Engineered specifically for classic mid-1960s Fender 1x15 Pro Amp chassis, this complete recapping kit replaces worn, leaky factory capacitors with premium high-voltage components designed to eliminate power supply hum, tighten low-end response, and safeguard your transformer.

Whether you are restoring a vintage Blackface Pro Amp or performing routine maintenance on an AB763 circuit, sourcing correctly rated, high-grade filter capacitors is essential for authentic vintage tone and bulletproof performance.

Circuit & Model Compatibility

This all-in-one capacitor replacement kit is tailored specifically for vintage mid-1960s Blackface Fender Pro Amp chassis featuring the following circuit revision:

• Fender Pro Amp: AB763 Circuit (1963–1965)

Parts Included in This Set

Default components included in this kit are listed below. We source trusted, ultra-reliable brands such as F&T and Sprague to ensure exact physical fit inside the original chassis doghouse enclosure:

• 3 x F&T 22uF - 500V Electrolytic Capacitors
• 2 x F&T 80uF - 450V Electrolytic Capacitors
• 1 x F&T 25uF - 70V Bias Filter Capacitor
• 5 x Sprague 25uF - 25V Cathode Bypass Capacitors
• 1 x 1K - 2W Dropping Resistor
• 1 x 4.7K - 2W Dropping Resistor
• 2 x 220K - 1W Balancing Resistors

Benefits of Recapping Your Fender Pro Amp

• Eliminate Mains Hum & Background Noise: Original 60+ year-old electrolytic caps lose tolerance and leak DC voltage, introducing unwanted 50Hz/100Hz background hum into your signal path.

• Restore Tight Low-End & Dynamic Punch: Fresh filter sets stabilize power supply voltages, restoring tight bass, sparkling highs, and clean headroom across the 1x15 speaker setup.

• Protect Output & Power Transformers: Dried-out or shorted filter capacitors put severe stress on your rectifier valve, power transformer, and output transformer—leading to costly component failures.

Premium Components for Vintage Fender Tube Amps

Every EVATCO filter replacement set features high-voltage electrolytic capacitors chosen for exact value matching and physical fit inside vintage Fender doghouse housings. Order your Fender Pro Amp AB763 filter capacitor replacement kit online today. EVATCO provides fast delivery across Australia and worldwide shipping for all your valve amplifier parts and tube amp restoration needs.

FENDER® and specific model names including Fender Pro Amp, Blackface, and AB763 are registered trademarks of Fender Musical Instruments Corporation. EVATCO is an independent supplier of aftermarket upgrade components and tube amp restoration parts. EVATCO is not affiliated with, sponsored by, or officially connected to Fender Musical Instruments Corporation. All references to Fender model names and circuit designations are strictly used for component compatibility identification.