The aim of this website is to provide general and technical information about music related equipment. The building directions and modifications suggested in the articles contained herein are provided free of charge and are the sole property of their owner. The website's webmaster, designer and author cannot be held responsible for any damage that could occur to your equipment should you wish to follow the website's instructions and suggestions.

WARNING! Valve (tube) amplifiers contain lethal voltage, even if they have been switched off or unplugged for a long time. If you have no experience in this kind of equipment and if you don't know all of the related safety rules and procedures, DO NOT OPEN YOUR AMPLIFIER and bring it to a qualified technician.