About us

We are Xavier and Jan from our low-tech guitar repair and pedal building bat-cave. We are settled in rural Spain. We love to experiment with classic circuits to create powerful fuzz and distortion devices. Our work philosophy is to build the pedals that would love to have and use in our rigs. 

Each pedal is built one at a time, using the best components and hardware. We work with different custom paint and powder coating finishing and screen printing inks, so we are sure nothing is going to look like it!

Contact us for any question you may have about our products or to know more about us.

Welcome to the Mono Portal! 

Jan & Xavier
Atmosfera 6



* Our pedals are built by order and it will take from 1 to 2 weeks to be built, tested and ready to ship since your order is placed.

** WE SHIP EVERYWHERE. International orders (outside EU) can be subjected to additional taxes and fees. In this case, the recipient is responsible for any fee upon arrival. Further information about the buyer can be also required (ID number, e-mail address or phone) by tax offices. Please, be sure you added your e-mail address so we can contact you in case there is any issue.

*** All our pedals comes with lifetime guarantee. This applies only to the original owner and the guarantee excludes malfunction by incorrect use, like using wrong voltage.

**** We recommend you use always quality regulated power supplies with isolated outputs. Daisy chain plugs or bad power supplies can result in unwanted noises as they don't have isolated outputs.