Heretic 100 Watt USA Made Tube Amplifier

The Heretic lives up to its name—defiant, powerful, and built to break the rules. With the same no-compromise construction as every Diamond amp, it delivers a thunderous gain tone that’s open, precise, and hits like a sledgehammer to the chest. Sitting in the same family as the Spitfire II but pushing the aggression even further, the Heretic combines a pristine clean channel with two distinct high-gain voices that demand attention.

Channel 2 features Diamond’s signature dual volume/gain design, giving you instant access to two gain levels on the fly—perfect for switching from massive rhythm grind to searing lead firepower, or dialing between thick, crushing riffs and surgical staccato precision. A rear-panel “depth” control lets you fine-tune low-end resonance, shaping the amp’s attack to suit any stage or studio setting.

Steel grilles, metal knobs, and a red LED glow give the Heretic its fierce look, while hand-picked tubes and premium components ensure unmatched reliability. Fully foot-switchable and loaded with modern firepower, the Heretic isn’t just an amp—it’s rebellion in a box.