The Pacemaker from ThinkGeek basically “analyzes the beats per minute of any songs you store on it’s internal 120GB disk — you can effortlessly beatmatch any two tracks with zero skill needed.” Available now, priced at $499.99. Video after the break.

Built-in timestretch means you can increase the speed of a track without increasing the pitch. Add in some amazing effects and you’ve got a live DJ mix going.

[via ThinkGeek]