Fender Bassman AA864 Filter Capacitor Replacement Kit

Valve Amplifier Power Supply Filter Set by EVATCO

Restore original high-headroom clarity, 50-watt punch, and long-term reliability to your vintage Blackface amplifier head with this specialized Fender Bassman AA864 Filter Replacement Set from EVATCO. Engineered specifically for classic mid-1960s Fender Bassman 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 1964–1965 Blackface Fender Bassman head or performing routine maintenance on an AA864 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 1960s Blackface Fender Bassman chassis featuring the following circuit revision:

• Fender Bassman: AA864 Circuit (1964–1965)

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 Bassman 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 the legendary tight bass articulation and dynamic headroom that the AA864 Bassman is iconic for.

• 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 Bassman AA864 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 Bassman, Blackface, and AA864 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.