Akashic Guitar effects PCB lookup
TONEDRIVEVOLUME

1590B · 3 knobs

Aion FX

Stratus (Legacy)

Based on the Ibanez Tube Screamer· 4 other boards clone it

Category
Overdrive
Controls
Tone · Drive · Volume
Difficulty
Easy
Price
see vendor

From the vendor

The quintessential mid-hump overdrive pedal made famous by Stevie Ray Vaughan, and the source circuit behind dozens of high-dollar boutique pedals.

Another classic that needs no introduction. But if you’ve ever wanted to mod the living daylights out of a Tube Screamer, this is a versatile PCB that fits in a 1590B.

There are two switches available: one for clipping diodes (with enough pads available for any diode combination you can dream of and “comp cut”/diode lift in the middle), and one that can be used for one of three other mods using jumpers:

• Fat mod (with three different settings) – read more at AMZ

• Brightness mod (also with three different settings)

• “Flat Mids” mod (from the Fulltone® Fulldrive 2)

With the right combination of part values and mods, you can build exact replicas of dozens of Tube Screamer-derived circuits, such as the following:

• Fulltone Fulldrive 2 (single channel)

• Fulltone RTO

• Lovepedal Eternity

• Landgraff Dynamic Overdrive

• Clay Jones Overdrive

Component lists are provided for a select few in the build document, but the Tube Screamer is a very inspirational circuit to say the least and there are many more out there.

Schematic

The schematic is in the vendor's build document. 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
R11k1k
R2510k510k
R310k10k
R410k10k
R54k74.7k
R651k51k
R71k1k
R810k10k
R9220R220
R101k1k
R111k1k
R12510k510k
R1310k10k
R14100R100
R1510k10k
R1647R47
R1710k10k
R1810k10k
Capacitors 11
C122n22n
C21uF1u
C351pF51p
C447n47n
C5220n220n
C6220n220n
C71uF1u
C8100n100n
C91uF1u
C1047uF47u
C1110uF10u
Diodes 8
D21N9141N914
D41N9141N914
D61N9141N914
D81N9141N914
D11N40021N4002
D72N70002N7000
D31N9141N914
D51N9141N914
Transistors 2
Q12N50882N5088
Q22N50882N5088
ICs 1
IC1JRC4558DJRC4558D
Potentiometers 4
TONE20KWW20kPotentiometer
DRIVE500KBB500kPotentiometer
VOLUME100KAA100kPotentiometer
RPD1M1MPotentiometer
Switches 2
SW2SPDTSPDT
SW1SPDTSPDT
LEDs 1
LED1intoINTO

Other boards based on the Ibanez Tube Screamer