Amazon.com: Pyle - Pro Wireless DJ Audio Mixer - 3 Channel Bluetooth Compatible DJ Controller Sound Mixer, Mic-Talkover, USB Reader, Dual RCA Phono/Line In, Microphone Input, Headphone Jack - Pyle PMX7BU.5,Black :
Gemini MM1 Pro Audio Pocket-Sized 2-Channel DJ Mixer w/ 2-Band EQ + Headphones - Rockville Audio
The Pokket Mixer lets you bust out DJ sets using two phones and a music app - Yanko Design