Mutec MC-4 Digital Audio Format & Sample Rate Converter - ADAT, AES/EBU and S/P-DIF interfaces in one box. Format and sample rate conversions up to 192kHz, 16 channel SRC engine for bidirectional conversions. AES11 Grade 1, internal reference clock (0.5ppm), built-in international power supply, interconnection of consumer and professional digital audio devices, ADAT, AES3 and S/P-DIF format and sample rate conversions, bidirectional conversions with different sampling rates, clock recovery and signal regeneration.