PEDALS BLUES KING

Blues King overdrive pedal, which is a clone of the Marshall Bluesbreaker overdrive circuit. I have added a number of extra features, plus upgraded the op amp to a NOS Raytheon RC4559N for increased fidelity and transparency. The added features are dual 3-way toggle switches to change the nature & amount of distortion. The top toggle switch is for soft clipping, and switches between symmetrical (dual 1S1588 clipping diodes), asymmetrical (1N914 x 1N4001), and a diode lift for a clean boost. The left toggle switch is for hard clipping, and switches between symmetrical (MA856), asymmetrical (dual 1N914 x single 1N914), and a diode lift for a clean boost. The 1S1588 & MA856 diodes were made popular by their use in Analogman's King of Tone pedal (which is also based on the Marshall Bluesbreaker). The right toggle switch changes the bass response of the circuit for those who want to fatten up single coils or use the pedal with a bass guitar. Internally, there are two additional controls. One tweaks the treble response, and the other is a little difficult to explain. One feature of the Bluesbreaker that separates it from the TS808 Tubescreamer is that it has a resistor in series with the clipping diodes. This reduces the overall compression and distortion of the circuit. The second trimpot I've added allows you to change the value of this resistance, making it possible to increase distortion & compression, or to reduce distortion & compression even more.