In 2025, Gibson re-launched the Tobias Classic, Killer B, and Growler with Bartolini pickups and electronics.

Based on popular demand, we developed a re-issue of the old Tobias Growler preamp harness in 2016. You can find the diagram for it here: https://bartolini.net/docs/gibson-tobias-growler-reissue-instruction/

We’ve built a few extras in the latest batch that can be purchased directly from Bartolini in our Web Store: https://www.bartolini.shop/product/growler_reissue

Since you have found your way to this page, you can get a discount on a Growler Re-Issue Preamp Harness by entering the code Growler20 at checkout. This offer will only work while we have stock. We only have a few, and it is unlikely we will make them again for a several years. They are a huge amount of work!

Attached is also a very old Tobias Growler wiring diagram for your enjoyment.