Enclosure not stated · 2 knobs

Blue Box Octave Fuzz

Based on the MXR Blue Box· 6 other boards clone it

From the vendor

The Blue Box Octave Fuzz drops your guitar signal two octaves down and combines it with gnarly fuzz for huge subterranean tones.

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

Check before you build · 1 value the reader of this schematic was not sure of

Ref	Value	Normalized	Type	Notes
Resistors 10
×11	56k	56k		read from the schematic by eye
×4	1M	1M		read from the schematic by eye
×3	10k	10k		read from the schematic by eye
×1	2M2	2.2M		read from the schematic by eye
×1	150k	150k		read from the schematic by eye
×1	470k	470k		read from the schematic by eye
×1	1k	1k		read from the schematic by eye
×1	330	330		read from the schematic by eye
×1	47	47		read from the schematic by eye
×1	4k7	4.7k		LED resistor; read from the schematic by eye
Capacitors 8
×2	10n	10n		read from the schematic by eye
×2	10u	10u		read from the schematic by eye
×2	47n	47n		read from the schematic by eye
×2	1u	1u		read from the schematic by eye
×2	100u	100u		read from the schematic by eye
×1	1n	1n		read from the schematic by eye
×1	300p	300p		read from the schematic by eye
×1	100n	100n		read from the schematic by eye
Diodes 2
×2	1N914	1N914		read from the schematic by eye
×1	1N4001	1N4001		read from the schematic by eye
Transistors 1
×3	2N3904	2N3904		read from the schematic by eye
ICs 2
×1	4558	4558		read from the schematic by eye
×1	CD4013	CD4013		two flip-flop halves of one chip; read from the schematic by eye
Potentiometers 2
Blend	A50k	A50k	Potentiometer	read from the schematic by eye
Output	A50k	A50k	Potentiometer	read from the schematic by eye