The UBE Screamer Deluxe kit is based on the TubeScreamer TS808, but replaces the original opamp used to produce the overdrive with a CD4069UBE, an integrated circuit that produces a way softer and warmer clipping.
There has always been a discussion about the tone of the TS808, and how the chosen opamp IC affects the sound as they all have different characteristics. But they all have one thing in common: an opamp will always clip in a very hard way as they have quite large gains.
Because of that, the UBE Screamer Deluxe uses the CD4069UBE: its amp stages create a softer clipping as they have a way lower gain. The Gain knob ranges from a soft almost clean overdrive to a moderate distortion, and the Tone allows you to shape the sound.
This version takes the standard UBE Screamer Kit and adds some new potentiometers and jumpers to make it an even more versatile pedal:
– Starve controls the amount of current that goes into the CD4069UBE IC
– CD1 & CD2 jumpers allow you to switch between silicon and germanium clipping diodes
– Mix lets you choose how much of the original sound you want mixed with the overdriven one for a softer tone
The UBE Screamer Deluxe kit is based in runoffgroove’s design, and is a great effect pedal if you are looking for a soft warm overdrive.
Download here the manual for the UBE Screamer Overdrive Deluxe Kit: