Akashic Guitar effects PCB lookup
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125B · 2 knobs

PCB Guitar Mania

Soldado Preamp

Based on the Soldano SLO 100

Category
Distortion· High gain Overdrive
Controls
Gain · Level
Difficulty
Average
Price
€9.90out of stock
Tags
diy-originals

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

Based on the frequency response of the Soldano Slo 100. Part of the series ‘Develop your own Preamp’ where you can combine preamp sections of iconic amplifiers with different types of EQs in order to create your own custom boutique pedal. More information about the EQ sections here.

Introduction

Finally! My all-time favorite amp the Super Lead Overdrive got captured in a box without sacrificing the sound. So many really disappointing versions out there… None of them nailed it, till now!

You may wonder what it took to make this possible? Well… there is this legend from Freestompboxes called Bajaman and he worked on the circuit till his design matched the exact frequency response of the actually amp. Meaning this is not just a Jfet version of Preamp that gets you somehow… eventually close to it. IT IS the tone you are looking for! So how do I know that, did I compare it to one of these super rare amps? Yes, because I actually own a Soldano SLO 100 that never leaves my house and it only took me one strum to hear that the search is over. From classic Rock to pushing mid pronounced metal tones that cut through. If you are looking for that SLO sound. I promise you will not be disappointed.

Controls

• Volume

• Gain

Demo

[media]https://www.instagram.com/p/CO0ybcjAHTD/?utm_source=ig_web_copy_link[/media]

For further analysis on this circuit take a look at this thread on DIY Stomp Boxes Forum and Free Stomp Boxes Forum.

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

Soldado Preamp 1v1 – Building Docs

Soldado Preamp 1v0 – Building Docs

Soldado Preamp – 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 54 rows

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RefValueNormalizedTypeNotes
Resistors 26
R11M51.5M
R21M1M
R310K10k
R4100K100k
R56K86.8k
R61K51.5k
R71K1k
R88K28.2k
R9100K100k
R10100K100k
R111K1k
R121K1k
R132K72.7k
R1447K47k
R15100K100k
R162K72.7k
R171K1k
R1822K22k
R192K72.7k
R201K1k
R212k22.2k
R221M1M
R2310K10k
R241K1k
R2510K10k
R2610K10k
Capacitors 18
C11u1u
C21u1u
C3120p120p
C41u1u
C710n10n
C82n22.2n
C9560p560p
C101u1u
C111u1u
C12560p560p
C1333n33n
C14220n220n
C15330p330p
C1610n10n
C171u1u
C181u1u
C191u1u
C20220u220u
Diodes 3
D11N58171N5817
D23mm3MM
D31N41481N4148
Transistors 3
Q1J201J201
Q2J201J201
Q3BC547BBC547B
ICs 1
IC1TL064TL064
Potentiometers 2
GAIN100KBB100kPotentiometer
LEVEL100KBB100kPotentiometer
Jacks & sockets 1
J201Q1Q1