I am selling two dedicated controllers used for double play. They were working fine a few years ago, but I don't have an environment to test them now, so I'm selling them as is. The original product had a problem where the buttons would get stuck easily, so I've made some personal modifications to address this. They are in good condition, but please be aware of this. KONAMI beatmania IIDX DX controller, 8-button specification, black and blue design. - Brand: KONAMI - Model: beatmania IIDX DX - Type: Controller - Number of buttons: 8 buttons - Color: Black/Blue - Bottom color: Blue Thank you for looking.