Valve Amplifier Filter Replacement Sets

Fender AA763, AB763 & AA864 Circuits

Restore original high-headroom clarity, punch, and reliability to your vintage Blackface-era tube amplifiers with specialized Valve Amplifier Filter Replacement Sets from EVATCO. Engineered specifically for classic mid-60s Fender circuits, these recapping kits replace worn, leaky factory capacitors with premium high-voltage filter sets designed to eliminate power supply hum and safeguard your transformer.

Whether you are servicing a mid-1960s Blackface head or performing a complete circuit restoration, sourcing high-grade, correctly rated filter capacitors is essential for authentic tone and bulletproof performance.

Compatible Vintage Amplifier Models & Circuit Names

Our all-in-one filter replacement sets are tailored to fit popular 1960s 40W to 85W Fender-style chassis and their common circuit revisions, including:

• Bassman: AA864
• Bandmaster: AA763, AB763
• Concert: AA763, AB763
• Pro Amp: AB763
• Showman: AA763, AB763

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

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 AA763, AB763, and AA864 filter capacitor replacement kits online today. EVATCO offers fast delivery across Australia and worldwide shipping for all your valve amplifier parts and restoration needs.