Finally, somebody made something I was thinking about a few years ago a soundcard with two input for two laptops, so DJs can switch over without disconnecting anything!
TWO COMPUTERS & FOUR DECKS USING YOUR FAVORITE MIXER
The SL 4 connects four vinyl turntables or CD players to your computer and the mixer of your choice. Using special control vinyl, CDs or MIDI controllers, you can scratch and mix files from your Mac or Windows computer's CD or hard drive. This intuitive system replicates the traditional DJing experience for "real feel" usability. With unparalleled performance, stability and audio quality, you'll know why thousands of DJs worldwide choose Rane with Serato Scratch Live.
The SL 4 is the first standalone DJ interface with two USB ports for seamless DJ changeover and back-to-back performances. Superior sound is delivered with high quality 96 kHz, 24-bit audio. Built-in galvanic isolation between USB and audio, with turn on/off muting, ensures that only the purest interference-free audio signal is heard. Low-latency ASIO and Core Audio drivers allow you to use the SL 4 as a studio production tool with multiple third-party software applications. The SL 4 is masterfully crafted by Rane for the discerning DJ.