Akashic Guitar effects circuit lookup
GAINLEVELTONE

125B · 3 knobs

Dead End FX

Mutoid

Based on the VOCU Hybrid Overdrive· 1 other board clones it

Category
Overdrive
Controls
Gain · Level · Tone
Price
$12.00in stock

From the vendor

Clone board of the VOCU Hybrid Overdrive. Very little is known about the VOCU brand, which is an acronym for "Vivid Output Capable Unit". Leave it to the Japanese to come up with very creative, yet very literal brand names. Anyway, as an overdrive, it is very vivid, and very capable. Gobs of boost, and the tone is geared more towards a nice mid boost. The mid is actually adjustable via an internal trimmer, as is the volume level that hits the last buffer stage. The real kicker is it comes with a voltage boost switch, which double the internal voltage of the circuit for additional headroom.

From our research, the VOCU brand may have been a division of the now defunct Fernandes company. Perhaps one last gasp to save their company? Who knows. However, many of their pedals were all hand built on perfboard, with meticulous workmanship (yikes!). Not exactly the best way to increase profits in a pinch. All we know is that the VOCU brand became "Vizion" for a short time, and it too soon disappeared. In true DEFX fashion, we've managed to keep the torch lit, so these really cool circuits won't be lost to the sands of time.

Schematic

The schematic is in the vendor's build document, page 4. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 44 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 14
R110ksch10k
R210ksch10k
R41msch1M
R51ksch1k
R6510ksch510k
R710ksch10k
R81ksch1k
R910ksch10k
R1110ksch10k
R121ksch1k
R13510ksch510k
R14100rsch100
R151msch1M
R101kocr1k
Capacitors 16
C1100usch100u
C2100usch100u
C347usch47u
C410usch10u
C510usch10u
C6100nsch100n
C7100nsch100n
C822nsch22n
C1022nsch22n
C11100psch100p
C12220nsch220n
C13220nsch220n
C15100nsch100n
C161usch1u
C91uocr1u
C141uocr1u
Diodes 4
D11n5817sch1N5817
D21n4001sch1N4001
D31n5817sch1N5817
D41n5817sch1N5817
ICs 3
IC11054ocr1054
IC24558ocr4558
IC34558ocr4558
Potentiometers 3
GainA1MschA1MPotentiometer
LevelB100KschB100kPotentiometer
TONEB20KocrB20kPotentiometer
Trimmers 2
TRIM15ksch5k
TRIM2100ksch100k
Switches 2
LODPDT ON-ONocrDPDT ON-ON
Bypass3PDTocr3PDT

Other boards based on the VOCU Hybrid Overdrive