Enclosure not stated · 4 knobs

Crunch Box

Based on the MI Audio Crunch Box· 9 other boards clone it

Schematic

The schematic image is on the project page. Open it at PCBWay.

Ref	Value	Normalized	Type	Notes
Resistors 7
×3	1M	1M		read from the schematic by eye
×2	1k	1k		read from the schematic by eye
×1	10k	10k		read from the schematic by eye
×1	470	470		read from the schematic by eye
×1	47	47		power filter resistor from PWR pad; read from the schematic by eye
×1	4k7	4.7k		LED resistor; read from the schematic by eye
×2	22k	22k		read from the schematic by eye
Capacitors 8
×2	22n	22n		read from the schematic by eye
×1	1n	1n		read from the schematic by eye
×1	220n	220n		read from the schematic by eye
×2	100p	100p		read from the schematic by eye
×2	100n	100n		the supply one is marked 100n* on the drawing; read from the schematic by eye
×1	2u2	2.2u		electrolytic; read from the schematic by eye
×1	10n	10n		read from the schematic by eye
×2	100u	100u		electrolytic; read from the schematic by eye
Diodes 1
×1	1N4001	1N4001		polarity protection; read from the schematic by eye
ICs 1
×1	TL072	TL072		dual op-amp, both sections used; read from the schematic by eye
Potentiometers 4
Gain	B100k	B100k	Potentiometer	read from the schematic by eye
Tone	C10k	C10k	Potentiometer	read from the schematic by eye
Pres	B20k	B20k	Potentiometer	read from the schematic by eye
Volume	B100k	B100k	Potentiometer	read from the schematic by eye
LEDs 1
×2	RED	RED		clipping LEDs to ground (one drawn with inward arrows); read from the schematic by eye