Akashic Guitar effects circuit lookup
VOLUMEGAINHICUT

125B · 3 knobs

Tagboard Effects

Ethos TWE-1Verified

Based on the Ethos TWE-1· 4 other boards clone it

Controls
Volume · Gain · HiCut
Difficulty
Difficult
Build
Vero· 23×25· 50 cuts, 21 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Amp Emulation, Ethos, Overdrive, TWE-1

From the post

Info:

"Inspired by the Trainwreck Express amplifier (built by the late Ken Fischer), the TWE-1 is solid-state pedal designed to emulate the touch-responsiveness and clean-to-overdriven range you get from a high-grade tube amp. Along with Volume, Hi Cut, and Gain controls, the pedal has 3-position Cab switch (4x12, 2x12, off), a Presence switch that provides three levels of high-frequency boost (post OD), a Voice switch (Traditional and Modern British), and a bypassable Brite switch that provides two levels of high-frequency boost (pre OD).

The TWE-1 with its Gain at noon or higher responded in an amp-like way to changes in guitar volume and picking strength, delivering everything from gritty cleans to richly saturated distortion textures. Thanks to its strong output, the TWE-1 is suitable for clean boosting too. All good stuff, but the standout feature of the TWE-1 is its powerful tone-shaping ability. The Hi-Cut knob attenuates treble when turned clockwise, and the Brite switch makes it easy to get the appropriate sparkle with humbuckers or single-coils. The Cab switch beefs up the low-end significantly in the 4x12 position (I felt the 2x12 setting sounded best with my Deluxe), and the Voice switch lets you choose between a thicker tone in the “M” position or one with more upper-midrange emphasis in the “T” setting. The Presence switch set to Hi restores shimmer when the Hi Cut control is turned up (a cool sound in itself), and between all of these functions, the TWE-1 certainly answers the needs of players who want a compact OD pedal with exceptional sound and flexibility."

The layout should fit in a 125B size box.

You can find Bugg's schematic and easier-to-build pcb on his website here.

This is a buffered effect. Follow the layout to connect the footswitch.

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 Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.

Parts list 40 rows

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Check before you build · 1 value the reader of this layout was not sure of
  • 2u2 x3 are drawn as round brown parts rather than electrolytic cans; type not stated
RefValueNormalizedTypeNotes
Resistors 16
×110R10read from the layout by eye
×213K13kread from the layout by eye
×610K10kread from the layout by eye
×64K74.7kread from the layout by eye
×1220R220read from the layout by eye
×31M1Mread from the layout by eye
×2100K100kread from the layout by eye
×13K33.3kread from the layout by eye
×14M74.7Mread from the layout by eye
×42K22.2kread from the layout by eye
×1470R470read from the layout by eye
×41K1kread from the layout by eye
×118K18kread from the layout by eye
×168K68kread from the layout by eye
×247K47kread from the layout by eye
×1??LED resistor, value not given; read from the layout by eye
Capacitors 13
×32u22.2uread from the layout by eye
×4220p220pread from the layout by eye
×1220n220nread from the layout by eye
×1100n100nread from the layout by eye
×347n47nread from the layout by eye
×210n10nread from the layout by eye
×13n33.3nread from the layout by eye
×222n22nread from the layout by eye
×11n21.2nread from the layout by eye
×112n12nread from the layout by eye
×422u22uelectrolytic; read from the layout by eye
×1220u220uelectrolytic; read from the layout by eye
×1470u470uelectrolytic; read from the layout by eye
Diodes 3
×21V8 Zener1V8D1, D2; read from the layout by eye
×41N41481N4148D3-D6; read from the layout by eye
D71N58171N5817read from the layout by eye
ICs 1
×2OPA2134OPA2134printed 2134; read from the layout by eye
Potentiometers 3
VolumeB10KB10kPotentiometerread from the layout by eye
GainB10KB10kPotentiometerread from the layout by eye
HiCutB50KB50kPotentiometerread from the layout by eye
Switches 4
BrightSPDT on/off/onSPDT ON/OFF/ONSwitch 1; read from the layout by eye
PresSPDT on/off/onSPDT ON/OFF/ONSwitch 2; read from the layout by eye
CabSPDT on/off/onSPDT ON/OFF/ONSwitch 3; read from the layout by eye
VoiceDPDTDPDTSwitch 5; read from the layout by eye

Other boards based on the Ethos TWE-1