DS Custom Audio Electronics Perc – Modded Harmonic Percolator

The DS Custom Harmonious Perc is a boutique, extensively modded version of the legendary Interfax Harmonic Percolator, the fuzz/drive hybrid known for its raw asymmetry and cult-status oddness. This reimagined circuit stays true to the quirky grind of the original while expanding its range, flexibility, and reliability with premium vintage components and modern upgrades.

At its core, the Harmonious Perc runs on NOS Soviet Germanium diodes and a NOS Soviet Germanium transistor, chosen for their rich harmonic response and authentic vintage character. To make the design far more versatile than the stock circuit, it includes:

• Footswitchable Diode Lift – instantly open up the clipping section for raw, uncompressed drive.
• Symmetry Control (Poti) – fine-tune the clipping balance for smoother distortion or gnarlier fuzz textures.
• Sag Control (Poti) – simulate power starvation for sputtery, gated, or collapsing sustain effects.
• Integrated FFB Unbuffer – allows the pedal to work seamlessly with buffered signals, solving the common incompatibility issues of vintage-style fuzz designs.

With these enhancements, the Harmonious Perc becomes a uniquely flexible fuzz platform: capable of everything from gritty, asymmetric overdrive to gated fuzz chaos, all while maintaining the strange, musical character that made the Percolator famous.

Features:

• Based on the iconic Interfax Harmonic Percolator circuit
• Footswitchable Diode Lift for open, unclipped tones
• Symmetry pot to adjust clipping asymmetry
• Sag pot for gated, voltage-starved fuzz
• Integrated FFB Unbuffer – compatible with buffered pedals and signals
• Built with NOS Soviet Germanium diodes & transistor
• True bypass switching
• Hand-built with premium boutique components

The DS Custom Harmonious Perc is both a tribute and an evolution—keeping the eccentric heart of the Percolator alive while making it ready for the realities of the modern pedalboard.

Power: 9V DC 10mA

Size (L x W x H): 119 x 94 x 42mm