Akashic Guitar effects circuit lookup
SUSTAINTONELEVEL

Enclosure not stated · 3 knobs

JMK PCBs· 015

Operational Muff

Based on the Electro-Harmonix Op-Amp Big Muff Pi· 18 other boards clone it

Category
Fuzz
Controls
Sustain · Tone · Level
Price
$9.00in stock
Buy the PCB at JMK PCBs Build document Operational Muff Build DocsDrill template

From the vendor

The Op-Amp Muff is another classic variation on the Muff that gets overlooked often. For those who don’t really go nuts for the 4 transistor type Muff, the Operational Muff is often much more attractive. It’s also easy to build, and there’s a lot of great, familiar sounds to be had with this circuit. Try it out if you’ve never gotten along with other Muffs but keep wishing you did.

Schematic

The schematic is in the vendor's build document. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 39 rows

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RefValueNormalizedTypeNotes
Resistors 18
R11M1M
R10470K470k
R256K56k
R115.6K5.6k
R3330K330k
R121.2K1.2k
R410K10k
R13100K100k
R547K47k
R14220K220k
R6560K560k
R15220K220k
R762K62k
R16820K820k
R847R47
R171M1M
R98.2K8.2k
R184.7K4.7k
Capacitors 9
C1150nF150n
C71uF1u
C24.7nF4.7n
C8100nF100n
C310nF10n
C9120nF120n
C111uF1u
C6150pF150p
C12220nF220n
Diodes 7
D11N9141N914
D21N9141N914
D31N9141N914
D41N9141N914
D51N9141N914
D61N9141N914
D71N40011N4001
ICs 2
IC1JRC4558JRC4558
IC2LM741LM741
Potentiometers 3
SUSTAINB10KB10kPotentiometer
TONEB10KB10kPotentiometer
LEVELB50KB50kPotentiometer

Other boards based on the Electro-Harmonix Op-Amp Big Muff Pi