Great drive in original box with manual.

Manufacturer's info below:

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The Yellow Spiral Drive has a wide variety of uses: “Always on” tone sweetener, clean boost, dirty boost, low-gain distortion, mid-gain distortion, amp input punisher, and “unleashing the fury, everything on 10” lead shred-o-rama. Select changes to the basic circuit also make the Yellow Spiral sound fantastic on bass with none of the low-end loss commonly associated with this circuit. The Girth control, as well as selectable clipping sections including high headroom LED's, adds a useful and modern spin to this classic circuit.

6-Position rotary tone network retains your highs but increases low-end “Girth.”

Very touch-sensitive, goes from chime to grind with just an increase in pick attack

Excellent clean-up with guitar volume knob

Circuit Based on DOD 250 Overdrive Pre-Amp with choice alterations

Three-Way toggle Voicing:

1. Paired Low vF LED's one red and one infrared

2. 1N4148 (like the original DOD 250)

3. BAT41 Assym Silicon

True Bypass

100%Analog

Yellow Gold Powdercoat Finish

Laser-Etched Graphics

Silver-Finish Aluminum Knobs

High-Quality Parts Throughout

Mix of classic and high-tech in both aesthetics and sonics