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Electro-Harmonix Pico Swello Attack Envelope Pedal Certified Open Box , $134.55 - Add to Cart Skip to Product Information

Electro-Harmonix Pico Swello Attack Envelope Pedal Certified Open Box

Attack Envelope Guitar Pedal with Volume, Attack, Frequency, and Mod Controls and Filter
Item ID: PicoSwellod1
Electro-Harmonix Pico Swello Attack Envelope Pedal

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Electro-Harmonix Pico Swello Attack Envelope Pedal Certified Open Box

Certified Open Box Savings!

Save $14.95 What is Certified Open Box?

The price below reflects your savings.

Savings: $14.95 New for $149.50

Micro Profile, Mega Envelope Power

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Boasting the attack envelope potency of its heralded stompbox sibling while maintaining a compact profile, Electro-Harmonix's Pico Swello brings forth a dedicated attack effect palette to the pedalboard of efficiency-minded musicians worldwide. It all starts with its historic attack application, supplying in-depth envelope control to span sounds from long-form leads to chorused swells and anywhere in between. From there, it's up to you to implement the famed Electro-Harmonix LPF effect, complete with adjustable resonance to best match your tone in mind. Apart from its legendary character, the Pico Swello retains the compact profile of its namesake series, keeping your rig clean and efficient while maintaining the utmost in professional effects tone. Complete with an included power adapter and all required accessories, rest assured Pico Swello will have no problem integrating into your setup for immediate expressiveness.

Streamlined 4-knob architecture

The Pico Swello's compact build isn't the only thing keeping this stompbox simple on the pedalboard. Armed with four onboard dial controls, shaping and refining your sound is easy to coordinate. Whether you're touting your axe on stage or are busy tracking in the studio, this pedal delivers a streamlined approach. The pedal's Attack and Volume parameters easily set the characteristics of your overall effect, while Freq. and Mod controls keep fine-tuning in-depth yet seamless to achieve. Combined with a built-in Filter button to engage the Pico Swello's timeless POG2 tone, you'll be surfing smooth swells and long-attack effects in no time flat.

Electro-Harmonix Pico Swello Features:

  • 4-knob compact pedal showcasing the polyphonic attack envelope potency of Electro-Harmonix's POG2 pedal
  • Sculpt smooth and balanced attack effects for interesting lead lines, arpeggios, swells, and more
  • Seamless 4-knob control layout provides authority over Volume, Attack, Frequency, and Modulation while staying compact on your pedalboard
  • Onboard Filter button engages an LPF with adjustable resonance for even more sonic potential
  • Included power adapter for immediate use in your rig
What is Certified Open Box Gear?

At Sweetwater, we're so picky that what we call "Certified Open Box" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

Certified Open Box (also known as a demo) means we’ve had it out of the box for our YouTube channel, displayed at events, tested in our studio, or maybe it was in a customer’s hands for a few days and isn’t ‘factory fresh’ as a result. Every Certified Open Box item we sell has Sweetwater’s 2-year Total Confidence Coverage™ warranty and has been tested and verified up to ‘new’ specs by our factory-authorized technicians to make sure it’s in perfect working order before we ship it to you.

When you buy a Certified Open Box item at Sweetwater, you get:
  • 2-year Total Confidence Coverage Warranty™!
  • Products inspected and tested by our factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Equipment that will MEET or EXCEED your expectations!

Click HERE to browse our current inventory of Certified Open Box equipment. Purchasing Certified Open Box gear from Sweetwater is a smart and safe way to save!

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.