jkeny wrote: > Similarly, Archimago might care to answer why he wants to borrow a > Regen, to measure it's reduction of the 8KHz spike when this is not the > target of the device? > A typical red-herring measurement, as per usual.
There must be some confusion about exactly which product is being discussed. I went here: 'Regen Home Page' (http://uptoneaudio.com/products/usb-regen) And found this text: " The USB REGEN takes the digital audio stream from your computer or other music streaming device, and generates a completely new USB data signal to feed to your DAC. It accomplishes this by combining a carefully chosen USB hub chip with an ultra low-noise regulator and low-jitter clock. Importantly, it does so with ideal impedance matching—right at the input of your DAC. If you are familiar with the variations in sound quality that come from different computer configurations, USB cables, and power supplies (no, "bits are bits" really does not apply when pursuing the audio summit), then you will immediately recognize the often dramatic effect that the REGEN can have on the the connection you feel with the music. *-Although the REGEN does not eliminate all sound quality differences between USB cables in a high-end system, it significantly reduces those differences.-* John Swenson has written about how the PHY chips and processors at the input of every USB DAC (even those with galvanic isolation) are sensitive to "packet noise modulation" and ground-plane noise—caused by poor signal integrity and impedance mis-matching. Every USB audio source (computer or streamer) and cable causes this, every DAC is affected by this—and the REGEN is the cure. " Specifically the following very broad statement seems to be in the cited source: "Although the REGEN does not eliminate all sound quality differences between USB cables in a high-end system, it significantly reduces those differences." That seems to be pretty darn broad! If the product being discussed is some other product, or if you can find where it says that reducing the 8 KHz spike is not something that it does not address, please help me. ------------------------------------------------------------------------ arnyk's Profile: http://forums.slimdevices.com/member.php?userid=64365 View this thread: http://forums.slimdevices.com/showthread.php?t=103684 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
