When it comes to the pursuit of pure tone, only a select few names stand as benchmarks of sonic craftsmanship — builders whose creations have shaped the sound of modern guitar. Master Builders brings together three titans of amplifier and cabinet design — Fortin Amplification®, Dave Friedman®, and Headfirst® — into one definitive DynIR collection.

From the precision-engineered aggression of Fortin®, to the studio-proven refinement of Friedman®, and the bold British authority of Headfirst®, this collection captures the essence of modern amp-building mastery. Each cabinet has been meticulously recorded using world-class microphones, boutique preamps, and elite studio outboard to deliver the unmistakable realism, harmonic complexity, and tactile response demanded by players and producers alike.

Representing decades of innovation and artistry, Master Builders unites the defining tones of American and British amplification heritage — from the snarling midrange and percussive punch of Fortin®’s modern metal icons, to Friedman®’s harmonically rich boutique voicings, to Headfirst®’s dynamic and expressive British rock foundations. Every DynIR in the collection offers a distinct tonal character, engineered to inspire and perform across any genre or production environment.

Featuring 19 DynIR Virtual Cabinets — drawn from 9 Fortin®, 5 Friedman®, and 5 Headfirst® captures — the Master Builders DynIR Cabinet Collection delivers an unparalleled spectrum of tones, from searing high-gain authority to nuanced, harmonically rich cleans. This is not just a celebration of great sound — it’s a tribute to the vision, precision, and passion that define the world’s true master builders.