MXR Distortion plus schematic diagram

for subtly different sounds try replacing d1 + d2 with 1n34s for fuzzy sounds , 1n4148 for more buzz , leds for more crunch or a 1n34.
the original diodes were germanium 1n270 types.

components connected by dotted lines signify modifications for click prevention (1m resistor ) and osillation (cap in feedback  loop )

effect could be improved with true bypass switching .

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4 x 12 W power amplifier with dynamic distortion detector and diagnostic interface

FEATURES
Requires very few external components
High output power
Fixed gain
Diagnostic facility (distortion, short-circuit and temperature detection)
Good ripple rejection
Mode select switch (operating, mute and stand-by)
Load dump protection
AC and DC short-circuit safe to ground and to VP
Low power dissipation in any short-circuit condition
Thermally protected
Reverse polarity safe
Electrostatic discharge protection
No switch-on/switch-off plop
Flexible leads
Low thermal resistance
Identical inputs.

GENERAL DESCRIPTION

The TDA8562Q is an integrated class-B output amplifier in a 17-lead single-in-line (SIL) power package. It contains 4 × 12 W single-ended amplifiers.

Circuit Diagram

4 x 12 W power amplifier with dynamic distortion detector and diagnostic interface

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