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Electro-Harmonix Pico Swello Attack Envelope Pedal

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Electro-Harmonix Pico Swello Attack Envelope Pedal

^# 58

Equipboard's ranking is determined by analyzing factors such as professional artist usage, popularity, user ratings, reviews, and more.

$129.00 to $149.50 Price Tier: Standard

3 Critic Reviews

1 wishlisted

2 saved

Page last updated Jul 04, 2026

Pricing and availability

We compare 600+ stores and found this item at 8 stores. Prices updated July 3, 2026.

Store

Reviews

Price

5.0 (8)

$149.50

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$149.50

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4.9 (21)

$149.50

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1.0 (1)

$142.37 46 available New

$129.99 6 available Used

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5.0 (2)

$149.50

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$149.50

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$149.50

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4.4 (18)

$129.00

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Average Price: $144

Standard/Professional

$60

$161+

Price Tier

In the Volume Effects Pedals category, Electro-Harmonix Pico Swello Attack Envelope Pedal is priced in the upper end of the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

Budget

Standard

High-end

Price History

Based on price data from 6 merchants for "Electro-Harmonix Pico Swello Attack Envelope Pedal". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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The Electro-Harmonix Pico Swello Attack Envelope Pedal is a compact powerhouse designed for musicians eager to inject dynamic and expressive volume swells into their soundscapes. Inspired by the legendary POG2, this polyphonic attack envelope pedal allows you to produce smooth swells on each note, whether you're strumming chords or picking out intricate leads. The polyphonic attack filter is a standout feature, providing a lush, multi-voice effect adaptable to any musical style.

Housed in a sleek Pico-sized enclosure, the Swello offers a straightforward, yet versatile control layout. The heart of the pedal lies in its Attack knob, which seamlessly transitions from quick, gentle attacks to slow, dramatic swells. Coupled with a Vol knob that manages overall output, you can easily balance your sound even when indulging in long attack effects. The onboard low-pass filter, activated via a dedicated Filter button, further expands your tonal palette. With controls for frequency cutoff and modulation depth, the Pico Swello lets you craft upward or downward filter sweeps, adding rich, textured layers to your performances.

Whether you're exploring ambient soundscapes or crafting synth-like pads, the Pico Swello's expressive capabilities are unmatched in such a compact form. With its included power adapter, this pedal is ready to elevate your rig right out of the box.

Key Features:

Inspired by the POG2's renowned attack slider
Polyphonic attack envelope for individual note swells
Simple 4-knob layout: Attack, Vol, Freq, and Mod
Onboard low-pass filter with adjustable resonance
Compact Pico-sized chassis for easy pedalboard integration
Power adapter included

Product specs

Power	9V
Current Draw	100ma

Videos

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EHX

Electro-Harmonix Pico Swello Attack Envelope Pedal (EHX Demo by Tom Burda)

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Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Electro-Harmonix Pico Swello Attack Envelope Pedal.

Features and functionality

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The Swello offers polyphonic envelope tracking with an envelope-triggered LPF, unlike the Attack Decay which requires sensitivity control adjustments.
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The "MOD" knob on the Swello allows control over the LPF sweep's direction and depth, while "FREQ" adjusts the filter sweep's starting frequency.
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Comparisons

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Users find the Swello's attack fluidity and note separation superior to both the Attack Decay and the Boss Slow Gear, especially during fast playing.
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Use cases and applications

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The Swello is praised for its ability to emulate pedal steel and violin sounds, making it a versatile choice for musicians looking to replicate these tones.
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User experience

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Guitarists appreciate that the Swello doesn’t require adjusting sensitivity controls, providing a more intuitive and seamless experience across different playing speeds.
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