Aging Engineer

https://lhzpreamps.com

Barrel Jack Pin Identification and Wiring

One of the more common questions we receive are about how to solder the barrel jack. This can feel like a daunting task to players who’ve never soldered before or have limited electronics experience. Thankfully, it is not hard to do! This video walks through a couple concepts to make…

Battery Drain Diagnostics

In this video we take a look at two of the most common reasons for rapid battery drain in a bass with an LHZ preamp. A 9 volt battery should last 6-8 months of normal use. However, certain wiring issues can cause an active preamp and pickups to always be…

HL-1 HAZard LAMPS Available in Store

FOR IMMEDIATE RELEASE: 5/2/2024 Today we are happy to announce that the HL-1 HAZard LAMPS pedal is now available from the LHZ Store! Bass Direct UK is now stocking both the HL-1 HAZard LAMPS Pedal and the LHZ-03 Preamp, which gives customers in the US and European Union a local…

OpAmp Comparison Results

In this video we’ll reveal the opamps that were used in the Blind Opamp Comparison video. This is a longish video, but it goes into a lot of the psychoacoustic challenges that make listening tests difficult (if not impossible) when the difference between the samples is small.

HL-1 HAZard LAMPS Manual

The HL-1 HAZard LAMPS pedal brings the unique tonal voice of the LHZ preamp into a pedal format. This pedal is intended for players with passive basses that want to give it the same punch and power as a USA Spector bass with an internal Hazlabs preamp. While it is…

Blind Opamp Comparison

LHZ Preamps have transitioned from the vintage LF442CN opamps to new chips. The LF442CN has been out of production for many years, and Hazlabs have moved to modern surface-mount op-amps a few years ago, so it’s our time to turn the page as well! This video is a blind comparison…

New Products Coming Soon!

We are excited to announce that we are getting to launch two new products: the LHZ-03 preamp and the much-anticipated HAZard LAMPS stombox. LHZ-03 PREAMP The LHZ-03 is a redesign of the LHZ-01 and LHZ-02 preamps that takes the last year of feedback from hundreds of clients to make multiple…

LHZ-03 Installation Diagram

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

Battery Voltage Impact on LHZ Preamp

In this video we answer the question “What happens to my active preamp when my battery dies?” This is a common questions from players buying a bass with active electronics for the first time. The good news is this: your preamp will NOT just die in mid performance! Instead, failing…

LHZ-01 or LHZ-02?

How do I choose? What is the difference between LHZ-01 and LHZ-01? For most clients, the decision between the LHZ-01 and LHZ-02 centers around how comfortable they are soldering small wires to a circuit board. We recommend the LHZ-02 for users with limited soldering experience, or for installations where the…