Kramer Electronics 6410 6410 is a high performance format converter for digital audio signals. It converts AES/EBU, AES-ID3, S/PDIF or Toslink optical digital audio signals to two channels of balanced audio and a headphone output. S/N Ratio - 80dB. Standards - AES/EBU, AES-ID3, S/PDIF, Toslink Optical. Sampling - 32, 44.1, 48kHz. Compact Kramer TOOLS - 3 units can be rack mounted side-by-side in a 1U rack space with the optional RK-3T rack.