The MXR Power Flanger/Doubler is a professional outboard unit with flanger and doubler functions. - Model: MXR Flanger/Doubler MX-126 - Functions: Flanger and Doubler - Controls: Manual, Sweep, Speed, Mix, Regen, Invert - Input/Output: IN, OUT terminals - Settings Range: Sweep: 0-100, Speed: 0.1-10, Regen: 0-100 This is a very rare rack-type MXR flanger/doubler. It works without any problems, but the manual knob is missing. (It can be turned by hand.) Please prepare one yourself. - Overall, it's in relatively good condition for its age, but please refrain from bidding if you are overly concerned about its condition. This is a used item. - There is no guarantee of operation after arrival. - No claims and no returns are accepted. - Please refrain from asking questions about the product after winning the bid. - Please ask any questions before bidding. - Cancellations are not accepted, so please understand. Thank you for viewing.