tablebeast
Well-known member
Here is a circuit I drew out for a guitar pedal/beltpack running on batteries and using a single 6418 tube. It has bypass and volume as the only controls. The plan is for the guitar player to wear it on their belt or pocket connecting to the guitar with a short cable. It could also be used on a pedal board as a boost or whatever. Its a simple gain stage that could even be put inside a guitar. Any suggestions? I'm trying to keep it as simple as possible. It's powered by two 9 volts in series with a single AA for the heaters. I'm calling it "The Hearing Aid". Here is the schematic: http://tablebeast.com/schematics/hearingaid13.jpg