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DRIVETONEVOLUMEPRESENCE

1590BBS · 4 knobs

Aion FX

TheseusDual Overdrive

Based on the Analogman King of Tone· 6 other boards clone it

Category
Overdrive· Dual-channel overdrive
Controls
Drive · Tone · Volume · Presence
Difficulty
Intermediate
Price
$16.00in stock

From the vendor

One of the earliest boutique “waitlist” pedals, this dual-channel drive is made up of two modified Marshall Bluesbreaker circuits in series.

The Theseus Dual Overdrive is based on the Analogman King of Tone, a dual-channel drive pedal first released in 2003 that played a big part in kicking off the boutique/handmade pedal trend. In the past two decades it has only grown in popularity, and as of this project’s release, waitlist is around 4 ½ years.

The King of Tone is essentially two modified Marshall Bluesbreakers in series, each independently switchable so they can be used on their own or stacked one into the other for a more complex and natural overdriven sound. Each channel has an internal presence control as well as DIP switches that control the clipping diode configuration.

In 2009, Analogman began offering a “high gain” modification that can be selected as part of the customization. We’ve added a third DIP switch position to allow this to be switchable per channel instead of being a hard-wired modification.

Otherwise, the Theseus is a direct clone of the King of Tone, but with one added convenience: a send/return loop between the channels. This allows the two pedals to be split up so you can have more flexibility in where they are used on the pedalboard, or put something in between them such as a boost or EQ for added tone shaping. If nothing is plugged into the send/return jacks, the loop is disabled.

In 2012, Analogman released the Prince of Tone, a single-channel version with a few extra tweaks. The Prince of Tone is available from Aion FX as the Achilles Amp Overdrive.

Schematic

The schematic is in the vendor's build document, page 7. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 92 rows

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RefValueNormalizedTypeNotes
Resistors 32
R11M1MMetal film resistor, 1/4W
R2100k100kMetal film resistor, 1/4W
R31k1kMetal film resistor, 1/4W
R427k27kMetal film resistor, 1/4W
R533k33kMetal film resistor, 1/4W
R610k10kMetal film resistor, 1/4W
R7220k220kMetal film resistor, 1/4W
R86k86.8kMetal film resistor, 1/4W
R91k1kMetal film resistor, 1/4W
R106k86.8kMetal film resistor, 1/4W
R111M1MMetal film resistor, 1/4W
R1247k47kMetal film resistor, 1/4W
R1347k47kMetal film resistor, 1/4W
R141M1MMetal film resistor, 1/4W
R15100k100kMetal film resistor, 1/4W
R161k1kMetal film resistor, 1/4W
R1727k27kMetal film resistor, 1/4W
R1833k33kMetal film resistor, 1/4W
R1910k10kMetal film resistor, 1/4W
R20220k220kMetal film resistor, 1/4W
R216k86.8kMetal film resistor, 1/4W
R221k1kMetal film resistor, 1/4W
R236k86.8kMetal film resistor, 1/4W
R241M1MMetal film resistor, 1/4W
R2547k47kMetal film resistor, 1/4W
R2647k47kMetal film resistor, 1/4W
R2747R47Metal film resistor, 1/4W
R2847R47Metal film resistor, 1/4W
R2910k10kMetal film resistor, 1/4W LED current-limiting resistor (Ch. A) which affects LED brightness.
R3010k10kMetal film resistor, 1/4W LED current-limiting resistor (Ch. B) which affects LED brightness.
RPD11M1MMetal film resistor, 1/4W Channel A input pulldown resistor. Can be anywhere from 1M to 2.2M.
RPD21M1MMetal film resistor, 1/4W Channel B input pulldown resistor. Can be anywhere from 1M to 2.2M.
Capacitors 23
C122n22nFilm capacitor, 7.2 x 2.5mm
C2100pF100pMLCC capacitor, NP0/C0G
C310n10nFilm capacitor, 7.2 x 2.5mm
C410n10nFilm capacitor, 7.2 x 2.5mm
C5100n100nFilm capacitor, 7.2 x 2.5mm
C610n10nFilm capacitor, 7.2 x 2.5mm
C710n10nFilm capacitor, 7.2 x 2.5mm
C81uF1uFilm capacitor, 7.2 x 3.5mm
C91uF1uElectrolytic capacitor, 4mm
C10100uF100uElectrolytic capacitor, 6.3mmReference voltage filter capacitor.
C1122n22nFilm capacitor, 7.2 x 2.5mm
C12100pF100pMLCC capacitor, NP0/C0G
C1310n10nFilm capacitor, 7.2 x 2.5mm
C1410n10nFilm capacitor, 7.2 x 2.5mm
C15100n100nFilm capacitor, 7.2 x 2.5mm
C1610n10nFilm capacitor, 7.2 x 2.5mm
C1710n10nFilm capacitor, 7.2 x 2.5mm
C181uF1uFilm capacitor, 7.2 x 3.5mm
C191uF1uElectrolytic capacitor, 4mm
C20100uF100uElectrolytic capacitor, 6.3mmReference voltage filter capacitor.
C21100uF100uElectrolytic capacitor, 6.3mmPower supply filter capacitor.
C22100uF100uElectrolytic capacitor, 6.3mmPower supply filter capacitor.
C23100n100nMLCC capacitor, X7RPower supply filter capacitor.
Diodes 13
D11N58171N5817Schottky diode, DO-41
D2BAS33BAS33Switching diode, DO-35
D3BAS33BAS33Switching diode, DO-35Original uses MA856 diodes. The BAS33 is the closest available diode
D4BAS33BAS33Switching diode, DO-35currently in production, available from Digikey. See build notes.
D5BAS33BAS33Switching diode, DO-35
D61N9141N914Fast-switching diode, DO-35
D71N9141N914Fast-switching diode, DO-35
D8BAS33BAS33Switching diode, DO-35
D9BAS33BAS33Switching diode, DO-35Original uses MA856 diodes. The BAS33 is the closest available diode
D10BAS33BAS33Switching diode, DO-35currently in production, available from Digikey. See build notes.
D11BAS33BAS33Switching diode, DO-35
D121N9141N914Fast-switching diode, DO-35
D131N9141N914Fast-switching diode, DO-35
ICs 4
IC1JRC4580DJRC4580DOperational amplifier, single, DIP8
IC2JRC4580DJRC4580DOperational amplifier, single, DIP8
MODE A3-pos. DIP3-POS. DIPDIP switch, 3-position
MODE B3-pos. DIP3-POS. DIPDIP switch, 3-position
Potentiometers 6
DRIVE A100kBB100k16mm right-angle PCB mount pot
DRIVE B100kBB100k16mm right-angle PCB mount pot
TONE A25kBB25k16mm right-angle PCB mount pot
TONE B25kBB25k16mm right-angle PCB mount pot
VOL. A100kAA100k16mm right-angle PCB mount pot
VOL. B100kAA100k16mm right-angle PCB mount pot
Trimmers 2
PRES. A50k50kTrimmer, 10%, 1/4"
PRES. B50k50kTrimmer, 10%, 1/4"
Switches 4
SENDNMJ6HC-SNMJ6HC-S1/4" phone jack, stereo, switched
RETURNNMJ6HC-SNMJ6HC-S1/4" phone jack, stereo, switched
CH. A3PDT3PDTStomp switch, 3PDT
CH. B3PDT3PDTStomp switch, 3PDT
LEDs 2
LED A5mm5MMLED, 5mm, red diffused
LED B5mm5MMLED, 5mm, red diffused
Jacks & sockets 5
IC1-SDIP-8 socketDIP-8 SOCKETIC socket, DIP-8
IC2-SDIP-8 socketDIP-8 SOCKETIC socket, DIP-8
IN1/4" mono1/4" MONO1/4" phone jack, closed frameSwitchcraft 111X or equivalent.
OUT1/4" mono1/4" MONO1/4" phone jack, closed frameSwitchcraft 111X or equivalent.
DC2.1mm2.1MMDC jack, 2.1mm panel mountMouser 163-4302-E or equivalent.
Hardware 1
ENC1590BBS1590BBSEnclosure, die-cast aluminum

Other boards based on the Analogman King of Tone