Mark Holcomb

at 12:40 into this clinic, Mark states "I prefer to have a lot more saturation in my tone, I run some kind of pedal in front of it. I normally use a horizon devices precision drive"

In this video he says : "This was my first pedal that I bought"

"I’m extremely happy with how unique and versatile this pedal turned out, and it’s been an inspiration merely jamming on it as of late. The intention here was to create something truly trippy – a pedal versatile enough to handle the soundscape-y material I’m drawn to, while at the same time having a very streamlined interface, making it easy to use as a songwriting tool – which is it’s main use for me." -Mark Holcomb

Mark starts talking about how he helped Seymour Duncan to develop the pedal around 1:28, and he keeps talking about how he developed the concept because he was using a prototype based on the Andromeda before.

Mark Holcomb uses the Seymour Duncan Pickup Booster & Line Driver, as noted on the Seymour Duncan website.

Mark Holcomb uses the Seymour Duncan 805 Overdrive, as noted on the Seymour Duncan website.