1/9/2024 0 Comments Head fi bitperfect![]() ![]() However, unless you’re in the habit of playing back and recording audio simultaneously, you shouldn’t be affected by the X-Fi’s poor frequency respose in RMAA’s loopback tests. We’ve contacted Creative about the issue and hope they’ll respond with a solution. So there’s nothing wrong with X-Fi frequency response on the playback end or on the recording end-only when the two are used together in a loopback test on a single card. The fact that X-Fi frequency response is unaffected with these straight playback tests is even more curious considering we actually used a second X-Fi as the recording card on our secondary system. When we use a separate sound card on a second test system to handle the recording, the response curves even back out. What’s particularly odd about these results is that they only appear in RMAA “loopback” tests that simultaneously play back and record the test signal on the sound card. Again in Vista, the frequency response curves for the X-Fi Fatalty and Auzentech’s X-Fi Prelude are all over the map. This behavior goes beyond just the XtremeMusic, as well. These results were taken from the exact same sound card and associated driver control panel configuration. If you have a DAC that has poor upsampling - buy a new one. BitPerfect also supports SoX and upsampling but, with current DACs there is no need to use this. Without it, Apple Music will convert files to its configured output resolution. In the graph above, taken from RMAA 5.5 under Windows XP, the X-Fi XtremeMusic’s frequency response curve looks fine.įast-forward to Windows Vista with RMAA 6.06, and the frequency response curve is a mess. BitPerfect replaces the backend of Apple Music with an engine that simply plays the exact bits of every file. RightMark Audio Analyzer is now up to version 6.06, and at least under Windows Vista, X-Fi frequency response curves are all jacked up. However, that was with RMAA 5.5 and Windows XP. The X-Fi had no problems with the frequency response test when we initially reviewed the XtremeMusic more than two years ago. I just need to find a local dealer that carries the line and has one available for an in home demo.In our last couple of sound card reviews, we’ve noticed some odd behavior from products based on Creative’s X-Fi audio processor in RightMark Audio Analyzer’s frequency response tests. I am looking for options here, with the Wyred4Sound DAC2se as the most likely candidate. The next step is to audition an I2S DAC with the Gustard U12. Not too bad considering the price of one box alternatives. The total price for the SMS-100+Keces+Gustard is $900. etc., however I have found the Lumin app to be the most compatible and bug free. Lastly, the SMS-100 works with many iPad and Android based control points Kinsky, Kazoo, Lightening DS, BubbleDS. ![]() A Keces-116 linear power supply powers the SMS-100. These Minimstreamer settings had an instant and very positive impact on sound quality. Thanks to Jesus R from Sonore who suggested this Minimstreamer configuration. My SOTM SMS-100 is connected to a QNAP fanless NAS running Minimserver and Minimstreamer, with the latter set to transcode dsd and dff files to DOP, and flac to 24 bit wav files. The reviews are all great and the idea that such a small package, even if you invest in an LPSU, get you such great sound is amazing! The more and more I read about the SOtM SMS-100, the more and more I'd like to grab one. Now Harpy, how about that mod log that I asked for over in your thread :-D I'm not sure about the rest of the circuit, but for sure the 2 units have very different brains, and the U12 is very new. The L1 could only do DSD over PCM (DoP) via its I2s output, and though I'm 90% certain I can't say for sure, I believe it's limited to DSD64. It's called USB PHY, for whatever reason, but it's what allows native DSD over USB, DoP over USB, and what allows 32/384 or 32/768 over USB. But the new U12 uses a U processor, which XMOS specifically developed at the end of 2013 for USB audio. The U10 uses an L1 XMOS chip that is for general processing, not specially USB audio. The U12 is not just the U10 in a new case and the addition of a display, this had been confirmed elsewhere. Haven't had any issues and it sounds good.Įdit: In this configuration it doesn't use any USB power and D+ D- 0 volt return will work.Įdit2: The CCHD957 clocks are from Digikey. With the Life Battery the mod is around $100.Ĭlocks and Dexa Voltage Regulator with the blue led. Since the circuit was designed for TXO's I sometimes use the Vanguard clocks. The Crystek are surface mount, but there is a 4 pin adaptor board available. As far as the mod goes I just ripped out most of the AC components and put four pin sockets in so I could move clocks in and out. Can't find the U-10 specs, but I thought they just added the read out. I am not sure, but I thought it used the same XMOS.
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