This is a Providence compressor. The rubber feet are missing. I have confirmed it works with a 9V external power supply. It will be delivered free of charge via Rakuraku Mercari Delivery. I cleaned it as much as possible, but there may still be some remaining dirt. It has been some time since the purchase, so there may be some crackling when moving the jacks. Also, since it is a used item, please understand that it is NCNR (No Claim, No Return). No complaints, no returns. Effects pedal Compressor Providence Type...Electric guitar