Akashic Guitar effects circuit lookup
GAINVOLUMETONE

125B · 3 knobs

PCB Guitar Mania

Sand Device

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

Category
Overdrive· Transparent Overdrive
Controls
Gain · Volume · Tone
Difficulty
Intermediate
Price
€9.90out of stock

Heads up Builders widely report inconsistent quality from PCB Guitar Mania boards, and whether a given board works is a gamble. Read recent forum reports before ordering.

From the vendor

Project overview

Inspired by EQD Dunes, Sand Device is the perfect pedal for the modern player who wants the purest mid-boosting transparent overdrive tones without unnecessary distractions. Basically, this board is a condensed, straightforward take on the highly popular Palisades “808-style” overdrive.

Introduction

Imagine grabbing an EQD Palisades and stripping away all its extra glitz and glamour till you get to the pure core. The result? The Sand Device, an awesome board that has all the great tones of the grown-up Palisades but with a simplified interface and a smaller footprint!

Sand Device has the same features as the Palasides: Gain, Tone, and Level controls, along with the classical voice and bandwidth settings, as well as the Normal/Bright toggle.

You can choose selectable clipping voices. Try the MOSFET for a tight, crunchy sound. Switch to Silicon clipping for tighter light gain. Select None to go from clean boost to gritty, pure op-amp distortion with a massive volume boost.

The two Bandwidth settings are Stock for the classic tone and Full Range for lower end.

Gain: Adjusts distortion, dirtier clockwise, cleaner counter-clockwise.

Tone: Brighter clockwise, warmer counterclockwise.

Volume: Adjusts the output level.

Normal / Bright: Normal is a warm sound, Bright is a more vivid sound.

Bandwidth: To the left is brighter with more emphasis on the mids, to the right is the full range for more low frequencies.

Diode: MF-MOSFET (Mosfet diode clipping), N-No (diodeless clipping), Si-Silicon (silicon diode clipping).

Controls

Potentiometers

• Gain

• Tone

• Volume

Switches

• Bright

• Bandwidth

• Diode

For any technical questions regarding this build don’t forget to check out our Facebook Group and our forum at Free Stomp Boxes.

Sand Device – Building Docs

Sand Device – Drilling template

Schematic

The schematic is in the vendor's build document, page 5. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 47 rows

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RefValueNormalizedTypeNotes
Resistors 18
R15100R100
R410K10k
R910K10k
R1410K10k
R1710K10k
R21K1k
R71K1k
R81K1k
R101K1k
R121K1k
R11M1M
R161M1M
R522K22k
R622K22k
R11330R330
RLED4K74.7k
R3560K560k
R13560K560k
Capacitors 13
C3100n100n
C12100n100n
C8150n150n
C7220n220n
C10330n330n
C547p47p
C968n68n
C610u10u
C1310u10u
C41u1u
C111u1u
C147u47u
C247u47u
Diodes 4
D31N41481N4148
D41N41481N4148
D61N58171N5817
D51n41481N4148
Transistors 4
Q32N70002N7000
Q42N70002N7000
Q1MPSA18MPSA18
Q2MPSA18MPSA18
ICs 1
IC1LM833NLM833N
Potentiometers 3
GAIN500K AA500k
VOLUMEB100KB100k
TONEB5KB5k
Switches 2
DiodeSPDTSPDT
BrightSPDT (On/On)SPDT (ON/ON)
LEDs 2
D13mm red LED3MM RED LED
D23mm red LED3MM RED LED

Other boards based on the EarthQuaker Devices Dunes