500V Audio Electrolytic Double Capacitor

These are high-voltage audio-grade electrolytic capacitors designed for amplifier applications. Available in multiple capacitance configurations: 100+100μF, 50+50μF, and 32+32μF — all rated at 500V DC working voltage. Each unit is a dual-section (double) capacitor housed in a single can, with dimensions subject to ±1–3 mm tolerance due to manual measurement. Constructed using standard electrolytic technology with aluminium electrodes and liquid electrolyte. Intended for use in tube amplifiers, solid-state power supplies, and high-fidelity audio circuits where stable DC filtering and energy storage are required. Before first use after long-term storage (2–3 months), these capacitors require a controlled voltage ramp-up (aging/activation) process to restore oxide layer integrity and minimise leakage current. This involves gradually increasing applied voltage — starting at 50V for 10–15 minutes, then raising by 20V every 4–5 minutes until reaching the full 500V rating. A 100kΩ 5W series current-limiting resistor is recommended during activation to protect both capacitor and power supply. Leakage current of a fully activated unit typically falls within 0.025–0.05 mA per microfarad at rated voltage and room temperature. Suitable for professional and enthusiast-level audio repair, restoration, and custom amplifier builds where original-spec replacements are needed.