Check the listing for details. Digitech PDS 1550 Programmable Distortion DOD Electronics USED Made in USA 1988. Condition: Used. Listed at 170.00 USD. Digitech PDS 1550 Programmable Distortion DOD Electronics USED Made in USA 1988 Normal 0 false false false EN-US X-NONE X-NONE Items sold AS IS. PLEASE view the images and read description/item details and shop policies carefully. We will find you the most economical shipping - FedEx, UPS, USPS. Questions/concerns? Contact us prior to purchase. Refunds for damage on INSURED items only (no exceptions). Local pickup always available. DOD Electronics Corporation Salt Lake City, Utah, U.S.A. Dated to October, 1988. Double play pedals. Two channels of distortion/switch between the two/bypass them.Seven knobs: level/gain for each channel, a frequency selector (100hz-3.7khz) and cut/boost, and octave control.Switch on and off/2 separately controllable distortions.Controls include: Frequency, Octaves, Cut/Boost, Level A, Gain A, Level B and Gain B. Customize your sound by removing the bottom panel with a series of 7 DIP switches that controls 10, 20, or 40 ms of delay going to A channel, B Channel or both, Parametric to A channel or Both, Hi Filter controls, Low boost controls, and Delay on/off. Trimpot inside to control Hi Filter cut/boost. Card inside the unit that explains these controls (did not open to verify).A & B Channel LED's. SHOWS VERY LITTLE WEAR. www.noisefx.com/docs/DigiTech_PDS1550.pdf (available on-line).