Tillman's Discrete FET Guitar Preamp

Tillman's Discrete FET Guitar Preamp

Project description

This is the famous Tillman Discrete FET preamp and can be used as preamp for piezo pickups or as a 3dB boost in general.

I ditched the J201 mentioned in the original design and replaced it with a 2N5485. Adjust R3 to set the drain to 6-7v. I used a potmeter to find the correct value.

I've placed one in front of my ValceCaster to boost the input signal and add some clarity.

Bill of materials

Resistors
R1: 3M
R2: 2.2K
R3: 6.8K
R4: 51K
Electrolytes
C1: 4.7μF
C2: 10μF
Transistors
Q1: J201
2 trace cuts

List

Click here to see the bill-of-materials as a list or download it as a comma separated values file (.csv).

Code

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Comments

i used the j201 i dont have a voltmeter new at this

i used the j201 i dont have a voltmeter new at this

a j201 and i dont have a voltmeter

a j201 and i dont have a voltmeter i built 2 of them same thing

tillman

i built this and the volume actually went down. any ideas?

What FET did you use and what

What FET did you use and what are the voltages on the pins?

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