1590BBS · 4 knobs
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
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 32 | ||||
| R1 | 1M | 1M | Metal film resistor, 1/4W | |
| R2 | 100k | 100k | Metal film resistor, 1/4W | |
| R3 | 1k | 1k | Metal film resistor, 1/4W | |
| R4 | 27k | 27k | Metal film resistor, 1/4W | |
| R5 | 33k | 33k | Metal film resistor, 1/4W | |
| R6 | 10k | 10k | Metal film resistor, 1/4W | |
| R7 | 220k | 220k | Metal film resistor, 1/4W | |
| R8 | 6k8 | 6.8k | Metal film resistor, 1/4W | |
| R9 | 1k | 1k | Metal film resistor, 1/4W | |
| R10 | 6k8 | 6.8k | Metal film resistor, 1/4W | |
| R11 | 1M | 1M | Metal film resistor, 1/4W | |
| R12 | 47k | 47k | Metal film resistor, 1/4W | |
| R13 | 47k | 47k | Metal film resistor, 1/4W | |
| R14 | 1M | 1M | Metal film resistor, 1/4W | |
| R15 | 100k | 100k | Metal film resistor, 1/4W | |
| R16 | 1k | 1k | Metal film resistor, 1/4W | |
| R17 | 27k | 27k | Metal film resistor, 1/4W | |
| R18 | 33k | 33k | Metal film resistor, 1/4W | |
| R19 | 10k | 10k | Metal film resistor, 1/4W | |
| R20 | 220k | 220k | Metal film resistor, 1/4W | |
| R21 | 6k8 | 6.8k | Metal film resistor, 1/4W | |
| R22 | 1k | 1k | Metal film resistor, 1/4W | |
| R23 | 6k8 | 6.8k | Metal film resistor, 1/4W | |
| R24 | 1M | 1M | Metal film resistor, 1/4W | |
| R25 | 47k | 47k | Metal film resistor, 1/4W | |
| R26 | 47k | 47k | Metal film resistor, 1/4W | |
| R27 | 47R | 47 | Metal film resistor, 1/4W | |
| R28 | 47R | 47 | Metal film resistor, 1/4W | |
| R29 | 10k | 10k | Metal film resistor, 1/4W L | ED current-limiting resistor (Ch. A) which affects LED brightness. |
| R30 | 10k | 10k | Metal film resistor, 1/4W L | ED current-limiting resistor (Ch. B) which affects LED brightness. |
| RPD1 | 1M | 1M | Metal film resistor, 1/4W C | hannel A input pulldown resistor. Can be anywhere from 1M to 2.2M. |
| RPD2 | 1M | 1M | Metal film resistor, 1/4W C | hannel B input pulldown resistor. Can be anywhere from 1M to 2.2M. |
| Capacitors 23 | ||||
| C1 | 22n | 22n | Film capacitor, 7.2 x 2.5mm | |
| C2 | 100pF | 100p | MLCC capacitor, NP0/C0G | |
| C3 | 10n | 10n | Film capacitor, 7.2 x 2.5mm | |
| C4 | 10n | 10n | Film capacitor, 7.2 x 2.5mm | |
| C5 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C6 | 10n | 10n | Film capacitor, 7.2 x 2.5mm | |
| C7 | 10n | 10n | Film capacitor, 7.2 x 2.5mm | |
| C8 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C9 | 1uF | 1u | Electrolytic capacitor, 4mm | |
| C10 | 100uF | 100u | Electrolytic capacitor, 6.3mm | Reference voltage filter capacitor. |
| C11 | 22n | 22n | Film capacitor, 7.2 x 2.5mm | |
| C12 | 100pF | 100p | MLCC capacitor, NP0/C0G | |
| C13 | 10n | 10n | Film capacitor, 7.2 x 2.5mm | |
| C14 | 10n | 10n | Film capacitor, 7.2 x 2.5mm | |
| C15 | 100n | 100n | Film capacitor, 7.2 x 2.5mm | |
| C16 | 10n | 10n | Film capacitor, 7.2 x 2.5mm | |
| C17 | 10n | 10n | Film capacitor, 7.2 x 2.5mm | |
| C18 | 1uF | 1u | Film capacitor, 7.2 x 3.5mm | |
| C19 | 1uF | 1u | Electrolytic capacitor, 4mm | |
| C20 | 100uF | 100u | Electrolytic capacitor, 6.3mm | Reference voltage filter capacitor. |
| C21 | 100uF | 100u | Electrolytic capacitor, 6.3mm | Power supply filter capacitor. |
| C22 | 100uF | 100u | Electrolytic capacitor, 6.3mm | Power supply filter capacitor. |
| C23 | 100n | 100n | MLCC capacitor, X7R | Power supply filter capacitor. |
| Diodes 13 | ||||
| D1 | 1N5817 | 1N5817 | Schottky diode, DO-41 | |
| D2 | BAS33 | BAS33 | Switching diode, DO-35 | |
| D3 | BAS33 | BAS33 | Switching diode, DO-35 | Original uses MA856 diodes. The BAS33 is the closest available diode |
| D4 | BAS33 | BAS33 | Switching diode, DO-35 | currently in production, available from Digikey. See build notes. |
| D5 | BAS33 | BAS33 | Switching diode, DO-35 | |
| D6 | 1N914 | 1N914 | Fast-switching diode, DO-35 | |
| D7 | 1N914 | 1N914 | Fast-switching diode, DO-35 | |
| D8 | BAS33 | BAS33 | Switching diode, DO-35 | |
| D9 | BAS33 | BAS33 | Switching diode, DO-35 | Original uses MA856 diodes. The BAS33 is the closest available diode |
| D10 | BAS33 | BAS33 | Switching diode, DO-35 | currently in production, available from Digikey. See build notes. |
| D11 | BAS33 | BAS33 | Switching diode, DO-35 | |
| D12 | 1N914 | 1N914 | Fast-switching diode, DO-35 | |
| D13 | 1N914 | 1N914 | Fast-switching diode, DO-35 | |
| ICs 4 | ||||
| IC1 | JRC4580D | JRC4580D | Operational amplifier, single, DIP8 | |
| IC2 | JRC4580D | JRC4580D | Operational amplifier, single, DIP8 | |
| MODE A | 3-pos. DIP | 3-POS. DIP | DIP switch, 3-position | |
| MODE B | 3-pos. DIP | 3-POS. DIP | DIP switch, 3-position | |
| Potentiometers 6 | ||||
| DRIVE A | 100kB | B100k | 16mm right-angle PCB mount pot | |
| DRIVE B | 100kB | B100k | 16mm right-angle PCB mount pot | |
| TONE A | 25kB | B25k | 16mm right-angle PCB mount pot | |
| TONE B | 25kB | B25k | 16mm right-angle PCB mount pot | |
| VOL. A | 100kA | A100k | 16mm right-angle PCB mount pot | |
| VOL. B | 100kA | A100k | 16mm right-angle PCB mount pot | |
| Trimmers 2 | ||||
| PRES. A | 50k | 50k | Trimmer, 10%, 1/4" | |
| PRES. B | 50k | 50k | Trimmer, 10%, 1/4" | |
| Switches 4 | ||||
| SEND | NMJ6HC-S | NMJ6HC-S | 1/4" phone jack, stereo, switched | |
| RETURN | NMJ6HC-S | NMJ6HC-S | 1/4" phone jack, stereo, switched | |
| CH. A | 3PDT | 3PDT | Stomp switch, 3PDT | |
| CH. B | 3PDT | 3PDT | Stomp switch, 3PDT | |
| LEDs 2 | ||||
| LED A | 5mm | 5MM | LED, 5mm, red diffused | |
| LED B | 5mm | 5MM | LED, 5mm, red diffused | |
| Jacks & sockets 5 | ||||
| IC1-S | DIP-8 socket | DIP-8 SOCKET | IC socket, DIP-8 | |
| IC2-S | DIP-8 socket | DIP-8 SOCKET | IC socket, DIP-8 | |
| IN | 1/4" mono | 1/4" MONO | 1/4" phone jack, closed frame | Switchcraft 111X or equivalent. |
| OUT | 1/4" mono | 1/4" MONO | 1/4" phone jack, closed frame | Switchcraft 111X or equivalent. |
| DC | 2.1mm | 2.1MM | DC jack, 2.1mm panel mount | Mouser 163-4302-E or equivalent. |
| Hardware 1 | ||||
| ENC | 1590BBS | 1590BBS | Enclosure, die-cast aluminum | |
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