Customization, maintenance and building of high quality valves musical equipment.

We specialize in repairs, customization, maintenance and building of tube equipment. We use the best components in the market because our goal is to offer the highest quality products.

Our company is based in Cardedeu (Barcelona), and we deal with everything related to valve amplification: repairing and maintenace of tube equipment, building of guitar and bass amplifiers, tube microphone preamps, equalizers and compressors –whatever you may need regarding the amazing world of valve-driven sound.

Come into our site and have a look. Thanks for checking it out!


Handcrafted, point-to-point wired tube amplifiers using high-quality materials and finishes


Handcrafted using the best materials available. We cover them in high-quality tolex, and you can choose from a selection of colours and front grills.

KS-2 Tube Preamp

 Two-channel tube mic preamp with a really warm sound that will no dubt become one of your favourite tools.


MPF-SOUND and MELOGUITARS, in collaboration with JORDI FARRÉS, present the new line of guitar amplifiers for all those musicians looking for quality and musicality, as well as reliability.