LHZ Preamps

Vintage Bass Preamps

LHZ Preamps

Vintage Bass Preamps

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LHZ-05 Install Manual

View and Download the LHZ-05 3-Band Preamp Installation Manual right here!

This is a living document that is constantly being updated as we create new installation diagrams for clients that have unique wiring challenges.

LHZ-04 Install Manual

View and Download the LHZ-04 Installation Manual right here!

This is a living document that is constantly being updated as we create new installation diagrams for clients that have unique wiring challenges.

MID-03 Midrange Control Owner Manual

View and Download the MID-03 Midrange Control Owner Manual right here!

The MID-03 plugs in between the output of your LHZ preamp and the output jack to give you the perfect midrange adjustment without impacting the clarity and articulation of the LHZ preamp.

LBCA-02 Active Blend Owners Guide

The LBCA-02 is an Active Balance Control that works well with both the classic and X-series pickups from EMG™ as well as pickups from most other manufacturers.

For more information about the LBCA-02, download the Owner’s Guide here.

HL-1 HAZard LAMPS Manual

The HL-1 HAZard LAMPS pedal gives passive basses the same punch and power as a USA Spector bass with an internal Hazlabs preamp.

While it is so simple that it really doesn’t need a manual, we made one anyway!

LHZ History

I thought I’d take a few minutes to go through the progression of updates to the LHZ preamp since it’s inception in 2022. I laughingly tell people that I’ve “accidently started a business.” It’s framed as a joke, but the reality is exactly that: this was a personal project and I’d never considered selling them until I kept getting ask to sell “just one” to someone. It’s been a journey of learning all around. Not just in how to set…

LHZ-03 Install Manual

View and Download the LHZ-03 Installation Manual right here! This is a living document that is constantly being updated as we create new installation diagrams for clients that have unique wiring challenges. Don’t see the diagram you need? Let us know! CURRENT VERSION PREVIOUS VERSIONS

LHZ-02 Installation Diagram

View and Download the LHZ-02 Installation Manual right here! This is a living document that is constantly being updated as we create new installation diagrams for clients that have unique wiring challenges. Don’t see the diagram you need? Let us know! UPDATE 2/10/2024: We’ve updated the installation manual to reorganize the drawings. A significant change in this version is the removal of the “Legacy” diagrams. All clients are using their existing volume (or blend & volume) pots and wiring the…

LHZ-02 Installation Diagram (Green Rev 1.6)

View and download a PDF copy of the Installation Manual for the LHZ-02 HazLabs Clone preamp. The LHZ-02 features solderless DuPoint style pin headers that compatible with EMG connectors. This manual is specific for users with the GREEN preamp marked as Rev 1.6. UPDATE NOTES The output jack wiring was revised to address a potential battery drain issue noted on certain configurations in control cavities using copper foil lining. In rare cases, the foil lining would conduct the battery ground…