Electro-Harmonix Pico Swello Attack Envelope Pedal

The Electro-Harmonix Pico Swello is a compact attack envelope and modulated filter effects pedal that brings the unique polyphonic attack feature from the legendary POG2 into a standalone stompbox. It generates expressive volume swells on each note you play — even within chords — and combines this with a low-pass filter section for additional tonal shaping and musical movement.

• Brand: Electro-Harmonix
• Model: Pico Swello
• Type: Attack envelope filter effects pedal
• Polyphonic Attack Envelope: Applies swell to each individual note
• Controls: VOL (output volume), ATTACK (envelope time), FREQ (LPF cutoff), MOD (filter modulation)
• Filter: Low-pass filter with adjustable resonance via FILTER button
• Bypass: Buffered bypass
• Input/Output: Standard 1/4″ instrument jacks
• Power: 9.6 V DC adapter included (center-negative, ~100 mA draw)
• Chassis: Compact Pico form factor