ISP "DECIMATOR II" noise reduction pedal. What do you think? Tested and working. Immediate purchase is welcome. Used item, so no returns or refunds. ⚫︎Includes the unit, instruction manual, and box (see photo 2). ⚫︎Velcro is attached to the back of the unit (see photo 5). - Knob: Threshold - Input/Output: Guitar in, Guitar out, Link in, Link out - Power: 9V battery or AC adapter From the retailer's website: "The effect is exquisite, cutting only the noise without affecting the original sound. It cuts noise thoroughly without any unnatural sound cut-off. Even during long sustain, it analyzes the original sound as it decays, without cutting off the sound's extension, allowing for natural playing. In addition, it has a function to link two of the same model, achieving even more advanced noise reduction. Connecting two units to sandwich the effects pedals you are using can eliminate the noise of the entire system, completely freeing you from noise concerns."