The name Mastro Valvola (The Valve Master) came from the experience gained in the world of vacuum tube amplification, which motivated founder and designer Luca Romanelli to devote himself to sound and electronic research with the aim of developing high-end products, turning them into a source of inspiration to the artists who use them.

“This experience helped me understand how important the warmth of sound is when it comes to captivating the audience.” (L.R. // Owner)

The production of guitar and bass pedals started in 2008 with the introduction of the Smog overdrive, and then expanded over time to include the wide range of professional products found there today.

Mastro Valvola is a small company made up of a tight-knit group of people who leverage their experience in the field of electronics to repair, make and design guitar amplifiers and effects.
Our products are proudly hand made in Italy, and we carry out all the stages of the manufacturing process in-house, from electronic design and pedal graphics to the component mounting on circuit boards and final assembly.

Our Philosophy
The sound of an instrument is the result of several factors. To a large extent, the outcome depends on the skills of the artist, but the devices that process the sound before it reaches our ears are also important. This is where Mastro Valvola comes in. Electronics and sound research for the development of high-level craft products that provide added value to the sound and inspiration to the artist. Inspiring the artist by the sound of their own instrument is our best achievement.

Unique sounding pedals for unique sounding guitarists.



Mastro Valvola primarily uses DHL express courier service but we are able to ship your order almost any way you want. All orders will ship within 1 or 2 business days.

To calculate shipping costs, simply add an item to your cart.

After your purchase is completed, and as soon as the order is shipped, an email with a tracking number will be sent to you to track the status of your shipment.

Payment options

  • PayPal
  • Credit cards
  • Wire transfer


We will accept returns within 10 days of customer receipt, for pedals purchased directly from this website. We simply ask that items are returned in their original condition and include all accessories, documentation, and packaging.

Buyers are responsible for all shipping costs. Worn or abused products will be subject to a restocking fee and/or store credit only.

To initiate a return, please send us a message on our contact page.


Mastro Valvola will repair or replace your pedal if it fails to operate due to defects in materials and/or workmanship for a period of 2 years to the date of purchase. This warranty does not cover misuse or neglect by the user.

If you have any questions, feel free to email us at

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