This whole dedicated music server (source as it's call) re-clocker business has got me thinking pretty hard. Just how much of an improvement can be had? I shared a PM with Roy about this. Aurender vs. C.A.P.S vs. Mac Mini and so on.... I'm trying to understand how "logically" one of these servers (Aurender) can be any better than a dedicated PC when these servers are just PCs them selves. Of course not any old PC. Not talking about laptops or big switching PSUs or huge gaming rigs. I'm talking about dedicated PC with a dedicated made for Audio USB card with dedicated LPSU music servers. To keep this in the proper perspective. I have a modified C.A.P.S PC (stripped down version of Win 8.1 with J.River 21). No fans (fan less), no switching PSU. I have a custom 3 output TeraDAK LPSU above, that powers the following below: A dedicated USB card (JCAT) Just switched from SOtM tx-USB exp to the JCAT card. A fan less PC (with a SSD drive) http://www.atechfabrication.com/products/HeatSync_2800HP_Mini-Client.htm A fan less storage station http://www.atechfabrication.com/products/mass_storage_2500.htm. An iFi iPurifier. A Regen with a dedicated TeraLink X2 LPSU for it as well in the chain. http://www.teradak.com/products/46.html To the DAC So as you can see every thing is powered separately by a couple of pretty good LPSUs and an iPurifier. So there should be no EMI/RFI transmissions to be found - or little to none. In others words the power going through the USB is clean. Now as I said - I have the Regen in the chain. I also compared the $150 Regen to the $3500 Total DAC re clocker and could not tell the difference at all from the Regen to the re clocker. That told me the signal coming from the USB was as good as it could get. My theory anyway. As much as I liked the D1-Dual and heard many differences between it and the Yggdrasil and it and the Bracasit M1 (I preferred the TotalDAC D1-Dual over both), I found the re clocker showed no improvement "at all". So I returned the TotalDAC re clocker and kept the Regen. So my question is how is possible for the N10 / N20 to be any better than a well put together Audio PC with a Regan or Re clocker in the chain. I understand the N10 / N20 has a pretty good OCXO clock but so does the Regen and the Re clocker. I keep saying "with a Regen / Re clocker in the chain" because the Regen / Re clocker takes what ever signal it's given, discards it so to speak and regenerates / creates a new one. If this is the case, as long as the USB signal is coming from a "clean" source it really doesn't matter if it's a C.A.P.S or a Aurender or a TotalDAC server, the Regen / Re clocker is make a new signal anyway. So logically how can one sound any better than the other. Now I do understand if the Regen / TotalDAC Re clocker is not in the chain, different results should be had. This is another reason I say headphones "does not scale high enough" to tell the difference in "some" very high end equipment. For instance. I could not tell the difference at all between amps (Pass Labs INT30A and Pass Labs INT150) using the HE-6 or the HD800s. It wasn't until I moved both amps to my speaker rig was I able to hear a difference between the two amps. The headphones was not able to scale high enough to accomplish what my speaker could.