The Rane SL series of interfaces with Serato Scratch Live set the standard for vinyl emulation. The SL 2 advances the technology found in the original SL 1 with these improvements: - - CD / Phono input switch on the SL 2 box - - Superior sounding 24-bit converters - - Hotter 3 Vrms input and output - - 44.1 or 48 kHz sample rate selected in.