Dreadhead

Perforated? The dust cover has tiny perforations in it.

Well they spec how they test the THD: for example the DT770M is spec'd to <.2% under IEC 60268-7. That's a whole lot less. Also Beyer specs 5 - 35,000 Hz for the DT770M. So either Beyer is full of shit because you can look at the DT770 graph over at Headroom and it varies a hell of a lot.. I seriously doubt those phones are "flat".

No way in hell. Lets throw heated air/dust at the plastic shield....

Yup. I have to keep my head still with these bad boys or they crinkle but that's not too difficult.

Now I remember why I wasn't so hot on Sonic Studio: they also go on to talk about their math having a noise floor below -110 db which is fine but in a plaback system there is no way in hell you're hearing all the way down there (unless you're blessed with music that is 40 db below FS).

I hope you enjoy it What's the price? My Vintage King trial of the Weiss DAC2 and Mytek arrives tomorrow. Mytek has an 8 in 8 out AD/DA that might fit your bill and there is even a DSD option for a little extra money.

Well 0.9% (which is less than 1) a hell of a lot of distortion and 16-20k isn't that wide if they are using the standard -3dB. I actually correct my headphones to dead-flat with an EQ plus a slow roll off in the highs to correct for HF rolloff of flat monitors in an actual mastering studio (see the Etymotic Website here Etymotic Research, Inc. - ER-4 - Technical Specifications, they have one without the roll off that's the ER-4B). If they really are flat I'm interested but I can get there probably for cheaper and with less distortion with HD650s.

[showUID]=421&tx_sbproductdatabase_pi1[showUid][backPID]=93&cHash=ea00ad4144]http://www.beyerdynamic.de/en/broadcast-studio-video-production/products/headphonesheadsets/headphones.html?tx_sbproductdatabase_pi1[showUid][showUID]=421&tx_sbproductdatabase_pi1[showUid][backPID]=93&cHash=ea00ad4144 <1% doesn't seem so hot for distortion and the frequency reponse doesn't seems so good either. The fact they are "standards" is likely the issue.

Happy Birthday to you sir!

Oh yeah it does..... I don't remember the details but it's in the manual: http://www.benchmarkmedia.com/system1/files/documents/DAC1_-_Manual_-_Rev_L.pdf

The Bel Canto DAC3 is an excellent DAC but it is rather "hot". It's actually hotter than my +12 dBu DEQ2496. I'm doing a voltmeter matched comparison right now and the DAC3 sits at a volume of 96 which means it's probably +16 dBu at full scale. Voltage divider is perfectly fine as long as it's done well.

Yeah you're right . It's not quite the same thing as 1 bit PCM which would be delta modulated. Since they use delta sigma though the order of the filtering changes: Delta-sigma modulation - Wikipedia, the free encyclopedia Still in the end it's "easy" to go from one to the other but the data is not preserved exactly because there is a filter involved etc.....

I'm afraid it is the same thing actually DSD is pulse code modulated audio (PCM), it just happens that if you're doing it with 1 bit you call it delta sigma modulated. You guys are calling PCM with higher bit depths and lower sampling rates as PCM but it just plain isn't. It's like everyone in my particular field calls RANS by the name CFD but in fact pretty much everything using a computer to solve fluid problems is CFD. DXD is just high speed PCM and another label. The end products from DSD and PCM are different actually, because in PCM when they use a delta sigma DAC they low pass filter to get rid of the high frequency noise that a lot of DSD DACs just let through. There are some really interesting AES papers on DSD (actually all delta sigma dacs) and noise shaping around too. There some links on the DSD wikipedia page: Direct Stream Digital - Wikipedia, the free encyclopedia. I went to the two authors web pages but the pro-DSD guy threw me for a bit of a loop because he's now changed to being a woman and that made it a lot harder to track her down.

When has that ever stopped us before?

Happy Birthday KG!

I want these amps though I pretty much have no use whatsoever for them. My room is small and my Linn Classik does a fine job.

The return mailing paperwork said "replace transducer" but to me it looks like they replaced the pair. I could be remembering wrong though. In the end "replace transducer" could even mean replace the headphones? Who knows. They look brand new and sound great that's all I care about in the end.

Well I got them on Friday. They replaced the driver. I guess I never messed them up enough to get a wholly new pair but the problem is gone so I'm happy. There is no squeal anymore.

Yup. That's the point. Make it work with any DAC. If people are interested I guess I could give doing building a method for doing this to a FLAC encoder. I'm thinking of making my method more general anyway. I also want to make the temporary file naming scheme time based so I can have more than one file going through HDCD decoding at a time safely with no risk of one overwriting the other. The only issue is finding the all the various command line options EAC uses by default.

I could easily do it for other formats but I use WMA so I did it for that.

I wrote a batch file that runs the conversion and writes the stderr to a text file, it then parses the text file to see if it found HDCD (if it didn't it just crashes or writes an identical file). If it did find it it copies it back to the input location and moves on to the compression if not then it deletes the file. One issue right now is that I put it in the WMA compressor VBScript file to call the batch file. In the end it works rather well.

If you want your DSD in PCM form just buy an HDFury2 (I have one and it converts the DSD to PCM and goes to my DAC just fine) or this: HDMI 3 in 1 Converter Switcher DVI YPbPr RGB HDMI v 1.3 + SPDIF L/F Audio For the DSD all the way people I think you guys are S.O.L. In the end DSD is PCM and PCM is DSD just different sampling rates and bit depths. That said delta sigma DACS are essentially the same as DSD dacs but they do have some different filters and noise shaping fun.

because I made a choice years ago and that's where I ended up. If you want a test file though I can arrange for WAVs or Flac I just would need to modify some stuff.

Well after some futzing I have modified Exact Audio Copy to check to see if a file has HDCD Data and if it does use this: HDCD Software Decoder [Archive] - Doom9's Forum or: Index of /~cjk32/hdcd to convert it to a 24 bit file and then encode to a lossless WMA at with 24 bits. The files aren't much bigger than the 16 bit files because most of the extra bits are zeros anyway. Pretty cool Can I hear the difference? haven't tried yet but I certainly like knowing that I can get everything out of the HDCDs. Only problem now is that I will have to go through and re-rip my HDCDs.

Hell yeah!