A-102 Diode Low Pass Filter

Doepfer A-102 Diode Low Pass Filter

The Doepfer A-102 is a 24dB analog low-pass filter built around diodes instead of transistors, resulting in a distinctively raw and vintage tone. Compared to classic ladder filters, the A-102 delivers a grittier, more aggressive character — perfect for acid lines, techno, and experimental sound design.

The module offers manual and CV control over cutoff and resonance, with self-oscillation possible for powerful sonic shaping. It's an excellent choice for modular users looking to add a different analog flavor to their system.

Key Features:

• 24dB diode-based analog low-pass filter

• Distinctive, raw, and vintage sound

• Self-oscillating resonance

• CV control over cutoff and resonance

• Ideal for acid, techno, and gritty sound design