Two-Rock Amplifiers is a boutique guitar amplifier manufacturer based in Rohnert Park, California, founded in 1999 by amp designer Bill Krinard and Joe Mloganoski. The company built its reputation on hand-wired, point-to-point tube amplifiers celebrated for their high headroom, touch sensitivity, and articulate clean tones — qualities that draw comparisons to the legendary Dumble amplifiers that partly inspired the brand's early direction. Two-Rock amps are particularly prized as pedal platforms, with players valuing their transparent, three-dimensional character that responds expressively to playing dynamics.

The lineup encompasses a range of hand-built tube amplifiers including the Classic Reverb Signature, Bloomfield Drive, TS1 ("Tone Secret"), Traditional Clean, Silver Sterling Signature, Studio Signature, Vintage Deluxe, Burnside, and Studio Overdrive — each targeting different tonal needs from pristine clean platforms to cascading gain architectures. Signature editions have been developed in collaboration with noted players including John Mayer, Joey Landreth, Matt Schofield, and Tomo Fujita. All amplifiers are assembled in California by a deliberately small team, distributed through a curated network of authorized dealers rather than mass-market retail chains.

Two-Rock has cultivated a devoted following among professional guitarists spanning blues, rock, jazz, and country. Artists including John Mayer, Doyle Bramhall II, Eric Johnson, Joe Bonamassa, Carlos Santana, Ben Harper, Billy Strings, Ariel Posen, Mick Taylor, and Al Di Meola are among those associated with the brand's amplifiers.

Two-Rock has 164 products cataloged on Equipboard, including Guitar Amplifier Heads, Combo Guitar Amplifiers, and Guitar Amplifier Stacks. Their gear is featured by 38 artists, with the strongest followings in Rock, Pop, and Blues. Notable users include Ariel Posen, John Mayer, and RJ Thompson. Most Two-Rock products sit firmly in the high-end, boutique range.