Vertex Effects Dynamic Distortion Mk II
Seafoam green finish in excellent condition, fully functional, with clean graphics and no major wear. Pedal only, no box.

Hand-assembled California distortion that blends the touch sensitivity of a 60s germanium fuzz with the midrange cut of a Tubescreamer-style overdrive. It cleans up smoothly with your guitar’s volume knob, from sparkling cleans through overdrive and into fuzz.

Where It Comes From
The circuit grew out of Vertex’s mods for well-known players using the Maxon SD-9. They reshaped the tone control into a fully usable range with no icepick treble, added output and clean headroom, widened the gain range, and fitted an Alpha 3PDT footswitch. The Mk II combines SD-9, RAT and fuzz tone stacks, and its thin/fat knob covers everything from a big British 4x12 sound to treble-heavy RAT-style distortion.

Features

• Works the same before or after a buffer, and won’t choke a wah’s sweep the way a vintage fuzz can
• True bypass
• Assembled in California
• Runs on a 9V DC supply (adapter not included), or a 9V battery
• The Mk II was a 250-piece limited edition