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Yesterday I hooked up the W20 to the Vivaldi to permit the Master Clock to synch the unit. The Aurender website has a diagram of how the set up should look. Note that they presume you will upsample all files to DSD (which was true for me anyway). This is important as the clock to the DAC (Group 2) is set for 44.1kHz and is not switched as far as I can tell if you want to change the output resolution.
Diagram: USB1Upsample to DSD: http://www.aurender.com/page/manual-..._systeminstall A written summary: The Master clock has three outputs. Group 1 to W20, Group 1 to Upsampler and Group 2 (Set to 44.1mHz) to DAC. Via the supplied dongle, there is a USB connection to the W20 USB input The Upsampler has a USB input from the W20 (formerly asynchronous USB), and a clock input from Group 1. The USB input was set to W or synch mode. The Upsampler outputs dual AES to the DAC The DAC gets dual AES (1 and 2) from the Upsampler (AES 1 and 2 is enabled, AES 3 and 4 is disabled). The DAC also gets a Group 2 clock input on W1 from the clock. The DAC balanced outputs go to my mono blocks. One note that I didn't see anywhere in the write-up. There is a menu selection in the W20 Settings where you must turn on Clock Synch. Once I enable this capability, the clock switched inputs efficiently when the resolution of the input files changed from 44.1 to 96kHz. I didn't get a chance last night to do any critical listening. As I stated in a previous post, the asynchronous USB input created a very black background and tight imaging improving my previous set up significantly. I'd be happy right there without any other improvements. I'll post again in a few days. Cincy
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