Akashic Guitar effects circuit lookup
FUZZ VOLUMEFILTER VOLUMERESONANCEFREQUENCY

Enclosure not stated · 4 knobs

Effects Layouts (blog)

Death by Audio Evil Filter

Based on the Death By Audio Evil Filter· 2 other boards clone it

Category
EQ / Filter
Controls
Fuzz Volume · Filter Volume · Resonance · Frequency
Layout
Unverified · no build reported at Effects Layouts (blog) yet
Tags
Death by Audio, Filter, Fuzz

From the post

Here's an unreleased version of the Evil Filter. It's similar but not quite the same as the original. The schematic was pulled from a video interviewing DBA's Oliver Ackermann and was redrawn here. Some of the parts are a little pricey but the resulting sound is apparently amazing.

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.

Parts list 27 rows

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Check before you build · 2 values the reader of this layout was not sure of
  • Q1-3 legend reads 'MPSA05G': printed clearly, unusual part number (possibly MPSA05)
  • IC printed as '1044' (charge pump, e.g. MAX1044/TC1044): prefix not given
RefValueNormalizedTypeNotes
Resistors 9
×21K1kread from the layout by eye
×610K10kread from the layout by eye
×122K22koff-board, on the Hi/Lo switch; read from the layout by eye
×147K47kread from the layout by eye
×468K68kread from the layout by eye
×1100K100kread from the layout by eye
×3180K180kread from the layout by eye
×3910K910kread from the layout by eye
×21M1Mread from the layout by eye
Capacitors 4
×4100nF100nread from the layout by eye
×34.7uF4.7uelectrolytic; read from the layout by eye
×210uF10uelectrolytic; read from the layout by eye
×1100uF100uelectrolytic; read from the layout by eye
Diodes 1
×11N40011N4001read from the layout by eye
Transistors 3
Q1MPSA05GMPSA05Gread from the layout by eye
Q2MPSA05GMPSA05Gread from the layout by eye
Q3MPSA05GMPSA05Gread from the layout by eye
ICs 2
×110441044charge pump, printed as 1044; read from the layout by eye
×1UAF42APUAF42APread from the layout by eye
Opto 1
×2H11F1MH11F1Mread from the layout by eye
Potentiometers 4
Fuzz VolumeA100KA100kPotentiometerread from the layout by eye
Filter VolumeA100KA100kPotentiometerread from the layout by eye
ResonanceC100KC100kPotentiometerread from the layout by eye
FrequencyC500KC500kPotentiometerread from the layout by eye
Switches 3
Filter4P3T rotary4P3T ROTARYread from the layout by eye
WaveDPDTDPDTread from the layout by eye
Hi/LoSPDTSPDTread from the layout by eye

Other boards based on the Death By Audio Evil Filter