A OPTICAL IN• Connect OPTICAL IN to corresponding optical output of sourcessuch as CD, DVD or BD players, digital cable box, digital tuners andother applicable components.B DAC MODULE INPUT SELECTOR• Slide this switch to select the active input to the DAC module. Set toOPTICAL for the S/PDIF source to be selected. For computer audioto be selected, set to USB.• Set to PHONO if the optional PP375 Phono Preamplifier module isinstalled.NOTEPress DISC/PHONO input selector of C 375BEE to switch to the DACmodule’s current active source.C USB• Using Type A to Type B cable connector (not supplied), interfacecomputer audio to this asynchronous Type B USB input to directlystream 24 bit/96 kHz PCM content from your PC or MAC.• In order to stream computer audio to the DAC module, ensure thatthe Sound or Audio device of your computer is set to “NAD USBAudio”. Check with your computer’s operating system on how to setup or select “NAD USB Audio” as the Sound or Audio device.SPECIAL NOTE ABOUT PC COMPATIBILITY WITH THEUSB INPUT OF THIS PRODUCTBecause of the great variety of PC-compatible computer systems,operating system versions, and peripherals currently in use, we do notguarantee ‘glitch free’ performance with all such systems. This NADproduct uses a special ‘asynchronous’ USB mode that eliminates the veryhigh levels of jitter (digital timing errors) endemic to the USB interface.While this mode offers superior audio quality, it is not a common modeof operation for some USB driver software. If you experience audiodropouts we suggest trying an alternate PC or PC operating system.In general, we find Apple computers to be the most stable for thisapplication.For those using PCs, we have developed a NAD USB Audio driver thatimproves your PC’s performance, especially those running Windows 7.Visit NAD’s website (http://nadelectronics.com) and go to this product’spage. Then, download “NAD USB Audio Driver” from the “Manuals andDownloads” tab. Install the NAD USB Audio Driver to your computer byfollowing the instructions provided.MDC DACMODULAR DESIGN CONSTRUCTION DIGITAL-TO-ANALOG CONVERTEROPTICALINUSBOPTICALUSBDAC MODULEPHONOA B CThe C 375BEE has added the MDC DAC module to bring the convenience ofcomputer music to your system with NAD musical performance fully intact.USB is a computer standard for high speed data transmission but it has afeature set tilted towards PC use. USB sends information in “data packets”which makes the system very robust. There is also a traffic manager that canvary the size and sequence of the packets – good for PC, bad for music.These timing variations create a condition called “jitter” – smallvariations that create a harsh distortion. Thanks to a technique known as“asynchronous USB”, MDC DAC module’s high precision clock eliminates thisdistortion (jitter) usually associated with music in a computer environment.With the DAC module now installed in the C 375BEE, refer below fordescriptions of key DAC module parts.ENGLISHPORTUGUÊS FRANÇAISESPAÑOLITALIANODEUTSCHNEDERLANDSSVENSKAРУССКИЙ