March 2026

Tone Capsule vs LHZ Preamp Comparison

We’ve finally posted our comparison between the Darkglass Tone Capsule and the LHZ preamp. This is NOT intended to show one preamp as better than the other. Instead, the goal is to help players understand the unique EQ, dynamics, and harmonic response of each circuit design to be able to make a more informed decision. We all struggle to decipher marketing jargon and the subjective opinions of other players, so we do these video with the intent of objectively showing…

LHZ vs TonePump A/B Demo: Steven Ferguson

Steven Ferguson recently upgraded his 2009 Euro LX from the stock TonePump to the LHZ-04 preamp. He’d previously recorded a cover of “Shot In the Dark” with this bass, and online users asked if he’d re-record the same song with the LHZ. We reached out to Steven to see if we could mash these up to hear a back-to-back comparison. Here’s the result! While the differences are subtle in the final mix, focus on the initial note attack where you…

LHZ-05: 3-BAND Preamp

We are proud to announce that the long awaited 3-band version of the LHZ preamp has been released! The LHZ-05 combines our existing LHZ-04 (2-band preamp) and our MID-03 midrange module to provide a single-board 3-band preamp. This video walks through some of the new features of the LHZ-05 3-band preamp.

Tone Capsule vs LHZ Preamp Comparison

LHZ vs TonePump A/B Demo: Steven Ferguson

LHZ-05: 3-BAND Preamp

Preamp Identification: Find My Diagram

Installation Planning Checklist

LHZ-05 Install Manual