Akashic Guitar effects circuit lookup
DISTORTIONTONEOUTPUT

125B · 3 knobs

GuitarPCB

NostalgiTone Rock Candy: 70s Hard Rock and Blues

Category
Compressor
Controls
Distortion · Tone · Output
Price
$8.95in stock
Tags
new

From the vendor

NostalgiTone Rock Candy

Description

Rock Candy is built around a multi-stage gain structure designed to deliver the open, dynamic character of classic ’70s hard rock and blues. A transistor input stage feeds a high-gain op-amp section, with symmetrical diode clipping adding natural compression and harmonic character as the gain is increased.

Rock Candy moves from clean, gritty overdrive into a fuller, more sustained drive as the Gain control is advanced. Its open, full-range response retains the character of the guitar while adding crunch and sustain, rather than narrowing the sound into a pronounced midrange focus. The Tone control works within the gain circuit, providing a range from warm, muscular crunch to brighter, more cutting lead tones.

The result is a straightforward, amp-like overdrive with plenty of output to push a clean amplifier into its own sweet spot. Whether you’re after crunchy rhythm tones, bluesy overdrive, or singing lead sustain, Rock Candy delivers the responsive, harmonically rich character associated with classic ’70s hard rock and blues.

Mainboard Dimensions – 2.10” x 2.12”

Included with each PCB purchase. – (1) Mainboard, (1) wiring board, and (1) ribbon cable.

NostalgiTone Rock Candy Build Document

Order a drilled enclosure from Tayda (registration required)

• 125B – Drilled Enclosure Link

• 1590B – Drilled Enclosure Link

Schematic

The schematic is in the vendor's build document, page 2. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 41 rows

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ocr read from an image · sch paired from the schematic · fixed corrected by hand. Check marked values against the build document.

RefValueNormalizedTypeNotes
Resistors 18
R11M1M
R124K74.7k
R233K33k
R134K74.7k
R333K33k
R144K74.7k
R41K1k
R15470R470
R51M81.8M
R1610K10k
R6100K100k
R17100R100
R72M22.2M
R822K22k
R9100K100k
R102k22.2k
R1133K33k
R1910Kocr10k
Capacitors 13
C5100n100n
C647u47u
C718n18n
C8100n100n
C9120p120p
C1047n47n
C1127n27n
C147n47n
C1222n22n
C247u47u
C134u74.7u
C310n10n
C4100u100u
Diodes 3
D11N58171N5817
D31N41481N4148
D41N41481N4148
Transistors 1
Q1MPSA13MPSA13
ICs 2
IC1TL072TL072
IC1AB20KocrB20K
Potentiometers 3
DISTORTIONB1MB1MPotentiometer
TONEB20KB20kPotentiometer
OUTPUTA10KA10kPotentiometer
LEDs 1
D2Status LEDSTATUS LED