Mooer Slow Engine Auto Swell Pedal

The Mooer Slow Engine is a compact guitar effects pedal designed to replicate the smooth, swelling sound of a bowed instrument or a violin-like volume swell. Perfect for ambient, shoegaze, post-rock, or experimental guitarists, this pedal automatically controls your guitar’s attack and decay, creating a seamless fade-in effect without needing to ride your volume knob.

Housed in a durable mini-sized enclosure, the Mooer Slow Engine saves pedalboard space while delivering professional, noise-free performance. With just two intuitive controls – Attack and Sensitivity – you can dial in slow, atmospheric volume swells or fast, subtle fades depending on your playing style. True bypass ensures your tone remains pure when the pedal is disengaged.

Whether you want lush string-like textures, dreamy ambient soundscapes, or cinematic background tones, the Mooer Slow Engine guitar pedal is an essential tool for creative guitarists and bassists.

Specifications

• Effect type: Auto volume swell pedal

• Controls: Attack, Sensitivity

• Bypass: True bypass

• Input: 1/4" mono audio jack (impedance: 1MΩ)

• Output: 1/4" mono audio jack (impedance: 100Ω)

• Power supply: 9V DC center-negative (power supply not included)

• Current draw: ~128mA

• Enclosure: Full metal, compact mini design

• Dimensions: 93.5mm (D) × 42mm (W) × 52mm (H)

• Weight: Approx. 160g