- Brand: MXR - Model Name: Sub Machine - Color: Purple - Controls: Volume, Tone, Fuzz, Sub - Sub-octave sound (one octave down) and fuzz can be connected in series/parallel. When OCTAVE is on, the fuzz switches to an upper octave fuzz. Thank you for viewing. Notes: Please understand that this item is a used item and is being sold as-is before bidding. The items in the photos are all that is included. Please refrain from bidding if you are looking for a perfect condition item or are overly concerned about minor details. We are not responsible for damage due to shipping. Please arrange for maintenance if necessary. We may cancel bids from those with negative feedback or if we determine that the transaction cannot be carried out smoothly. No claims, no returns.