Akashic Guitar effects circuit lookup
VOLUMETONEDRIVE

Enclosure not stated · 3 knobs

Tagboard Effects

EarthQuaker Devices DunesVerified

Based on the EarthQuaker Devices Dunes· 5 other boards clone it

Category
Overdrive
Controls
Volume · Tone · Drive
Difficulty
Medium
Build
Vero· 21×17· 31 cuts, 16 links
Layout
Verified · Tagboard Effects marks it as built and working
Tags
Dunes, EarthQuaker Devices, EQD, Overdrive, Tubescreamer

From the post

"The Dunes, like the Palisades, is a Tube Screamer variant. Yet it goes a step further from the original, adding a few extra features that go a long way to matching your guitar and pickups, to your amp. The knobs are familiar—Tone, Gain and Volume. In addition, there are three toggle switches that really make things interesting:

Voice: Gives you three tonal differences; MOSFET, Silicon and Normal. These options give you different levels of compression when adding gain, and really change the overall character a lot. The Normal setting has little to no compression if that is desired.

Normal/Bright: Works great when using either darker humbuckers—switch to Bright, or if using single coils, keep it normal. Using the master tone control in conjunction with this switch gives you a lot of useful variation.

Bandwidth: What a traditional Tube Screamer lacks—here, the Dunes gives you the option of adding a lot of deep low end—great for single coils, or switch it back to the more traditional screamer mode, accentuating the midrange, with less emphasis on the bottom end."

PCB and schematic available on PedalPCB website here.

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 28 rows

Report a wrong parse

Got parts in a drawer? See what you can build with them.

RefValueNormalizedTypeNotes
Resistors 7
×51K1kread from the layout by eye
×510K10kread from the layout by eye
×222K22kread from the layout by eye
×2560K560kread from the layout by eye
×21M1Mread from the layout by eye
×1330R330read from the layout by eye
×1100R100read from the layout by eye
Capacitors 10
×147p47pceramic; read from the layout by eye
×168n68nceramic; read from the layout by eye
×2100n100nread from the layout by eye
×1150n150nread from the layout by eye
×1220n220nread from the layout by eye
×1330n330nread from the layout by eye
×21u1uelectrolytic; read from the layout by eye
×210u10uelectrolytic; read from the layout by eye
×147u47uelectrolytic; read from the layout by eye
×1100u100uelectrolytic; read from the layout by eye
Diodes 1
×31N41481N4148D2, D3, D4; read from the layout by eye
Transistors 2
×22N70002N7000MOSFET; read from the layout by eye
×2MPSA18MPSA18read from the layout by eye
ICs 1
IC1LM833LM833read from the layout by eye
Potentiometers 3
VolumeB100KB100kPotentiometerread from the layout by eye
ToneB5KB5kPotentiometerread from the layout by eye
DriveA500KA500kPotentiometerread from the layout by eye
Switches 3
VoiceSPDT on/off/onSPDT ON/OFF/ONSwitch 1, toggle; read from the layout by eye
BandwidthSPDTSPDTSwitch 2, toggle; read from the layout by eye
BrightSPDTSPDTSwitch 3, toggle; read from the layout by eye
LEDs 1
D13mm Red LED3MM RED LEDon the board; read from the layout by eye

Other boards based on the EarthQuaker Devices Dunes