This is a modification of the famous TS808 equipped with a 12AU7. By adding a vacuum tube amplifier section (which is ran at internally up-converted voltage) to the second stage of the main drive circuit, you can get:
The gain of the tube can be adjusted separately using the knob on the side of the main unit. The volume of the main unit functions as the master volume.
In addition, a mini-switch has been added to select the clipping on/off of the main unit's circuitry, enabling a wide range of sound creation from clean booster to fuzzy distortion, which is not possible with the original.
The DC jack is changed to 2.1mm barrel type jack. You can use tipical 9V DC center-negative (150mA or more) adaptor/power supply.
A vintage 12AU7 and compatible tubes which is selected by the builder is equipped.
Enjoy the real "Tube Scream"er.
*Pictures are for reference only. Actual pedal will vary.
