It's quite clean. I haven't used it much. I haven't hit the pads either. However, it was left out in the open for storage, so it had some dust on it. I've cleaned it up. Regarding any concerns before purchasing, please research and satisfy yourself before making a purchase. A compact MIDI controller with 25 keys and 8 pads. - Brand: AKAI - Model Name: MPK mini - Included Accessories: USB cable - Number of Keys: 25 keys - Number of Pads: 8 pads - Number of Knobs: 8 knobs Thank you for looking.