

It also features improvements to the sound quality. The unit has 2 inputs which can be used both as phono or line input, but unlike the old SL1 interface it doesn't have a microphone input and it has only 2 line outputs and no 'thru' outputs. The SL2 is the audio interface set to replace the older SL1 interface. The extra channel allows the DJ to record his/her music set, use a sampler while performing or connect a third player for three deck mixing. Like the SL2 it also has 48.0 kHz, 24-bit audio. Features include a USB 2.0 interface, improved dynamic range (120 dB), improved audio performance (24 bit converters) and additional audio channels with AUX input and output. The S元 is another audio interface for Scratch Live.

The unit also includes Low-latency ASIO and Core Audio drivers which allow the SL4 to be used as a studio production tool with third-party software applications. The SL4 has built in galvanic isolation between USB and audio, with turn on/off muting. It is the first standalone DJ interface with two USB 2.0 ports for seamless DJ changeover and back-to-back performances. Scratch Live currently works in conjunction with five application specific audio devices designed and manufactured for the system by Mukilteo, Washington-based Rane Corporation.

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