http://www.mojotone.com/ 最近新發現原本以電子零件、真空管為主的 Mojotone 居然也賣起了擴大機。有興趣的人不妨看看： Our goal at Mojotone Custom Electronics is to provide players with the ability to get the most pleasure out of each playing experience with the fewest headaches. The Tone Machine uses a unique tube amplifier design that combines the advantages of many classic tube amp designs without attempting to “clone” any particular amplifier. For the technically minded, the schematic is included in this web-site (click on the duck). Also included here are basic operational procedures, component specifications, suggested settings, and possible modifications. For the technician the tone machine is simple to work on, cloth covered hand wiring and chassis mounted potentiometers and tubes sockets make for a clean, easy to asses layout. The chassis is mounted with 4 bolts for quick, easy access to the electronics. Biasing the output section can be accomplished externally using the chassis mounted, screw driver adjustable pot located under the chassis and beside the power transformer.