Modified Line6 DL4 delay pedal. All four switches for switching effects and tap tempo have been upgraded (see photo 9). There is a dedicated switch and LED (green) for activating the looper. There is a dedicated switch and LED (red) for double preset settings, and a dedicated switch for "feedback" effect. Originally, there was an LED for double preset installation in the left corner of the pedal, but it is no longer used, so please refer to photo 10. There are no problems with the overall feel and usability of the pedal, and you can use it immediately. Comes with a dedicated AC adapter in very good condition. #delay #looper #line6 #dl4 #tubeecho #analogedelay #chorus #flanger #flashback