DAC's : The missing feature: Signal quality
There is no way this was a jitter detector. This was a classic S/PDIF receiver error detector. Even my DAC has this. Most logic families used in DACs are too slow to make these type of determinations. We are talking about gates with propagation delays of 1nsec trying to detect a jitter of 10psec. Not going to happen. Steve N. Empirical Audio |
erik - Purifier?? I don't know what product this is. Do you mean the Short-Block? There is no incompatibility with XMOS-based USB interfaces. Sometimes they need +5V from the USB cable depending on the design. The SB cuts this voltage. It doesn't matter because it out of production now. I would highly recommend this product for USB: https://sotm-usa.com/collections/sotm-ultra/products/copy-of-tx-usbultra-regenerator-1 This is the ONLY thing I have tried that makes my USB almost as good as my Ethernet interfaces. Steve N. Empirical Audio |
audioengr3,129 posts11-24-2018 3:20pm Steve, nice list in this post. With respect to the EA SM reclocker, I can see where your PS upgrade fits on the list. Where does the OTL upgrade fit, under jitter? |
The OTL upgrade simply removes the output isolation transformer. If the DAC has a transformer on the input, there is no reason to have two in series. The pulse transformer is really not necessary, but helps with ground-loop noise in some systems where the DAC does not have an input transformer. Both the standard and OTL versions of SM reclocker have very low jitter, but the OTL is slightly lower. If you want the lowest jitter, then OTL is recommended. Plugging the AC power for the DAC and the SM into the same outlet usually minimizes ground-loop noise, so the OTL works fine. Steve N. Empirical Audio |
