Akashic Guitar effects PCB lookup
DRIVELEVELTUBETONE

1590BBS · 4 knobs

Dead End FX

Cheerio

Based on the Maxon TOD-9

Category
Overdrive
Controls
Drive · Level · Tube · Tone
Price
$20.00in stock
Buy the PCB at Dead End FX Build document

From the vendor

Cheerio. The term used in New Zealand for a small sausage, which is what the 5703WB tube used in this project reminds us of. It's also what you'll be saying to a lot of your other overdrive pedals once you start using this one. Cheerio!

Based on the Maxon TOD-9 "Real Tube" Tubescreamer, we've made some big changes to the power section in this one. The Maxon not only uses a hefty 9VDC/2.2A (yikes!) power supply ( as big as ones used for laptops), but also some fairly exotic chips for the 30v and 6v supplies internally. Yes... you read right. 30v. This one has headroom for days. Our version retains all the same audio landscape, but requires a 12VAC/800mA (or better) power supply. These are usually quite cheap, and easy to find. An LT1054 is used for the boosting to 30v. The tube is first in line, pushing all the TS stuff downstream. The result is buttery smooth tone, that can also be very touch sensitive in the right hands. It can do subtle boost, all out crunch, and all points in between. Cheerio mate!

Schematic

The schematic is in the vendor's build document, page 11. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 72 rows

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RefValueNormalizedTypeNotes
Resistors 24
R41k51.5kfrom schematic
R5510k510kfrom schematic
R610k10kfrom schematic
R74k74.7kfrom schematic
R84k74.7kfrom schematic
R91M1Mfrom schematic
R1010k10kfrom schematic
R1127k27kfrom schematic
R12120k120kfrom schematic
R1350k50kfrom schematic
R14470r470from schematic
R15510r510from schematic
R161k1kfrom schematic
R17220r220from schematic
R181k1kfrom schematic
R191k1kfrom schematic
R201k1kfrom schematic
R21100k100kfrom schematic
R22100k100kfrom schematic
R23100k100kfrom schematic
R241k1kfrom schematic
R110r10OCR
R210k10kOCR
R310k10kOCR
Capacitors 32
C1100n100nfrom schematic
C3100n100nfrom schematic
C9100u100ufrom schematic
C10100u100ufrom schematic
C11100u100ufrom schematic
C18100n100nfrom schematic
C19100n100nfrom schematic
C2047n47nfrom schematic
C21220n220nfrom schematic
C22100n100nfrom schematic
C2347u47ufrom schematic
C241u1ufrom schematic
C25470n470nfrom schematic
C26470n470nfrom schematic
C27100p100pfrom schematic
C28220n220nfrom schematic
C29220n220nfrom schematic
C301u1ufrom schematic
C311u1ufrom schematic
C3222p22pfrom schematic
C331u1ufrom schematic
C2100n100nOCR
C4100n100nOCR
C5100u100uOCR
C6220u220uOCR
C7100n100nOCR
C12100u100uOCR
C13220u220uOCR
C14100u100uOCR
C1547u47uOCR
C16100n100nOCR
C17100n100nOCR
Diodes 6
D11N40011N4001from schematic
D21N40011N4001from schematic
D31N40011N4001from schematic
D41N40011N4001from schematic
D71n41481N4148from schematic
D81n41481N4148from schematic
Transistors 2
Q12sk3812SK381from schematic
Q22sk3812SK381from schematic
ICs 2
IC1LT1054LT1054OCR
IC34558D4558DOCR
Potentiometers 6
DriveB50KB50kPotentiometerfrom schematic
LevelB100KB100kPotentiometerfrom schematic
TubeA100KA100kPotentiometerfrom schematic
TONEW20KW20kPotentiometerOCR
TUBEA100KA100kPotentiometerOCR
DRIVEB50KB50kPotentiometerOCR