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Farm WLF Onboard OBEL Ready Preamp Module

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Listed:over a month ago
Sold By
Farm Pedals
Casco, ME, United States
Joined Reverb

WLF Onboard OBEL Ready Preamp Module

This circuit is a take on the Stratoblaster circuit. Before the Tiger Buffer was put into Jerry's guitars, he most utilized the Alembic Stratoblaster. It fattens up and adds growl single coils.

The WLF is OBEL ready.  The top switch is for the OBEL loop.  The blaster boost circuit is wired pre-OBEL loop to drive the signal. 

Designed to fit into most Fender/Squier stratocasters.

We highly recommend shielding the cavity and pick-guard when installing this preamp. It will, by nature, amplify any interference picked up by the guitar, and shielding will help mitigate any unwanted interference.


1: Master Volume, C500K

2: Master Tone, A500K 22NF Cap

3: Boost Gain, C50K

Top switch is for the OBEL.  The bottom switch is true bypass for the boost allowing the guitar to still be played if the battery dies or there is no battery.

Signal chain:

Wire from pickup selector > preamp module > tone control > boost > OBEL > volume control > output jack

This preamp module does not pretend to make you sound like Jerry, is not a part for part clone of any other pedal, and doesn't guarantee anything to anyone... I built this for fun, and it should be used to have fun.

Installation Instructions

Modifying a guitar can damage or destroy it... the buyer is taking on full responsibility for any damage done to their guitar.

Included in this unit: Completed board with pots & switches, 2 Stereo cable jacks, 9 volt battery strap.

Not Included in this unit: Knobs

Purchaser will need to have familiarity with soldering and guitar modification.

There is a pre-soldered lead in the I eyelet.  That wire should be soldered to the pickup selector.

There are two free eyelets next to the I eyelet for ground. The third ground eyelet has a copper wire soldered to the volume pot. The two remaining eyelets can be used for ground wires. The copper wire soldered to the volume pot can also be used as a ground solder rod.

There are six long wires attached to the board on the Blast side of the board. These wires should be snaked to the jack cavity and soldered to the two stereo jack provided.

The wires labeled on the board as T, R, & S are for the direct out. T goes to the Tip of the jack. R goes to the Ring of the jack. S goes to the sleeve of the jack. This is situated so that the battery is only grounded and completing a complete circuit when a guitar cable is engaged. When the guitar is unplugged the battery is disconnected, saving battery life.

The second set of wires labeled on the board as OT, OR, & OS are for the OBEL. OT goes to the Tip of the jack. OR goes to the Ring of the jack. OS goes to the sleeve of the jack.  Tip is the send, Ring is the return.  Use the stereo jack with the soldered wire (and extra tabs) for the OBEL.  This jack is set up so that if there is no cable plugged in, it automatically loops the signal back, not cutting any signal whether the OBEL switch is engaged or not.

The battery strap can be placed anywhere you want. We recommend drilling through the pickup cavity through the back of the guitar into tremolo cavity. The tremolo cavity makes a nice easy place to put a battery. There are bunch of ways to make battery compartments, you do you.

The battery wires are soldered to the board on the battery strap terminals. Red is +, Black is -.

Two holes will need to be drilled through the pick guard for the switches. Consult the template included with purchase.

Because of the nature of this item, it cannot be returned once it's been purchased without a written statement from a professional guitar tech outlining defects in the product. Each board has been tested prior to shipping.

We recommend bringing this module to a professional guitar tech to complete the installation.

This item is sold As-Described

This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.

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