DR Strings

Callen has endorsed officially DR Strings since 2026

Testimonial

“I found DR strings 2018 and I haven't looked back since. To me, DR strings are the definition of comfort while playing the bass. Every bass I've put a set of DRs on has played and sounded better as a result. When I put on a new set of Pure Blues, the strings feel like they've already been through my hands for a day and they don't need to to be broken in. They have the exact crisp and bright tone I'm looking for without being over the top. “

 

Fender

Callen began his partnership with Fender in 2026 and regularly records demos and creates social media advertisements for the brand.