jam expression pedal JAM Pedals | Boomster MK2
SKU: 61917753805
jam expression pedal

jam expression pedal JAM Pedals | Boomster MK2

Sale price$19.77 Regular price$21.97
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Description

jam expression pedal JAM Pedals | Boomster MK2With its musical response and increased headroom the Boomster mk. 2 aims to redefine the quality standards of the buffer and booster genres. Extensive testing and comparison sessions with most of the appropriate chips currently in production, resulted in JAM Pedals opting for the hi fi grade Texas Instruments OPA 2132 chips, which deliver effortless fidelity and lushness across the Boomster mk. 2's different functions. JAM Pedals' mission with the mk.

With its musical response and increased headroom the Boomster mk.2 aims to redefine the quality standards of the buffer and booster genres. Extensive testing and comparison sessions with most of the appropriate chips currently in production, resulted in JAM Pedals opting for the hi-fi-grade Texas Instruments® OPA 2132 chips, which deliver effortless fidelity and lushness across the Boomster mk.2's different functions.

JAM Pedals' mission with the mk.2 version of the Boomster was to elevate it into a well-rounded boost pedal encompassing all the necessary features and functions contemporary musicians have come to expect, as well as to offer a standalone buffer that not only sounds great but also feels right under the hands, making it an indispensable tone component of any rig.

Mission accomplished!

The Boomster mk.2 comes loaded with:

  • Selectable true or buffered bypass via internal dip switches (see schematic)
  • An expression pedal input to use as a volume pedal
  • 3 minutely tuned voicing options
  • Momentary / latching operation
  • 9-18V power-input range for variable headroom

Booster function:
Get up to 16db of clean unadulterated boost. Place the Boomster mk.2 after your drive section for a volume increase or hit the front end of your amp or different drive pedals to introduce an added gain-staging option! The 3 voicing options available are designed to help you precisely sculpt your tone and match different guitars, pedals and amps to one another.

JAM Pedals have carefully tuned these to a guitar-friendly range but have tested them to be useful with all sorts of instruments:

  • The top position attenuates the top end (control by how much via set-and-forget internal trimmer)
  • The middle position retains a flat, full-range response
  • The bottom position introduces more mids (control by how much via set-and-forget internal trimmer)

 

 

*When the Level knob is all the way to the left (closed) the Booster’s output level is at unity gain.

BUFFER BYPASS FUNCTION:

The rigorous R&D process employed for the development of the buffer inside the Boomster mk.2, accomplished the 2 main traits JAM Pedals feel make for a great buffer; With the Texas Instruments® OPA 2132 chip powering the buffer the Boomster mk.2 will:

  • Instantaneously bring back frequencies compromised over long signal chains, without the unwanted top-end harshness and compromised mids many buffers suffer from.
  • Successfully retain the original feel of the instrument, something very few buffers achieve.

VOLUME PEDAL FUNCTION:

Pair the Boomster mk.2 with any commonly available 10k passive Expression pedal and you have yourself a smooth travelling volume pedal starting from 0db at the heel position all the way to wherever it is that you have the L (level) knob set if the pedal is activated, or from 0db to unity gain when the pedal is OFF and in buffered bypass mode!

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 61917753805

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Diana Hernandez Escobar
Fort Morgan, US
★★★★★ 5
Justa medida
Size: 7, Color: Green, Size: 7, Color: Green
Bello
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Reviewed in the United States on February 14, 2026
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Irina
West Palm Beach, US
★★★★★ 1
Q enviaron un producto usado
Size: 7, Color: Black, Size: 7, Color: Black
El traje me gusto lo pedí en size 8 y le quedó grande a mi hijo, lo volví a pedir en un size 7 y lo q me entregaron fue una mercansia usada llena de brillo y mal olor, desde q abrí el paquete se veía q esta usada, me parece de muy mal profesionalismo ya q deberían revisar las cosas de devuelven para q después clientes como yo no tengamos q pasar por esto
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Reviewed in the United States on May 23, 2026
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Breanna Robertson
Cuba, US
★★★★★ 5
Definitely Worth It!
Size: 7, Color: Dark Champagne, Size: 7, Color: Dark Champagne
Love this set for my little Easter-man (Khaki - Size 6)! I have a husky 5 year old son. ( I was able to hem the pants myself although his pants slipped down a bit before I tightened his belt) Loved the overall quality for the price! Kids play - it was the perfect material to give a good look but not break the bank. I purposely bought a bit large to ensure he’ll be able to wear it longer. I’ll be back for the navy suit. SN: Mom’s dress is from Amazon, Little sister’s dress is from Costco
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Reviewed in the United States on April 13, 2026
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Nancy Powers
Natrona Heights, US
★★★★★ 5
Exceptional boys suit!
Size: 12, Color: Light Blue, Size: 12, Color: Light Blue
Seriously Great Little Suit! True to Size and Looked So Sharp. I bought this blue suit in a size 12 for my son, and honestly, I was really impressed. You know how sometimes kids' clothes sizing is all over the place? Well, this suit was actually a true size 12, which was a huge relief. It fit him perfectly right out of the box. And the best part? It looked fantastic on him! The blue is a really nice color, and the suit just looked really well-made. He wore it to a 6th Grade graduation and he looked so grown-up and handsome. We got a ton of compliments. If you need a good-looking suit for your son that actually fits, you should definitely check this one out. We were really happy with it!
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Reviewed in the United States on May 18, 2025
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JC
Grantham, US
★★★★★ 5
Great suit but the one we got needs a little adjustment
Size: 7, Color: Purple, Size: 7, Color: Purple
Very nice looking suit and my son loves it! We really like this suit, but unfortunately, the adjustable elastic waist band was sewn into the top of a belt loop on one side, so I will need to seam rip out those stitches and re-sew the belt loop. Also there are stitches through the adjustable back of the vest on one side that I will also need to taken out. Not deal breakers and I definitely know how to do this myself, so it doesn't seem worth returning over. If you order this, just be sure the stitching is right. Hopefully it is just an issue on the one we got. Our son is about 47" tall and weighs 46 pounds and the size 7 suit fits really well, especially because of the adjustable waist.
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Reviewed in the United States on September 27, 2025

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