The Zvex Double Rock Distortion & Boost Pedal is a compact dual-channel stompbox that merges two of Zvex’s famed Box of Rock circuits - along with the Super Hard-On boost - in one unit. Here’s how it breaks down: Key Features Dual circuits – Each side can be either Box of Rock-style distortion or Super Hard-On boost, selectable per channel. 4 versatile gain combinations – You can run Distortion → Distortion, Boost → Boost, Boost → Distortion, or Distortion → Boost—ideal for rhythm​/​lead switching SUBS contour switches – Three-position toggles per channel let you dial in the low end (scooped to full), so it’s adaptable to different amps. Tone, Drive & Volume on each side – Gives fine control over eq, gain, and output. Build & Specs - Size: 4.7″ × 2.38″ × 1.82″ - Power: Powered by a 9V battery or standard DC adapter (center‑negative); low current draw (~2 mA) The Zvex Double Rock is a remarkably flexible, compact powerhouse that brings vintage-style distortion and clean boost options in all directions.