cetoole

Yeah, me too. Available here if you didnt know. Actually have a vinyl release of both of those discs I ordered too, but no point for me.

Gary, around 180v. 91v zeners back-to-back on the input, then a voltage doubler.

and

Don, definitely a good idea to get that on an oscilloscope, those THS4031 love to oscillate. I currently see like 5mV at 5MHz on the output of mine, and more on the output of the AD797 stage.

Crowns are the symbol of higher grade parts, and double crown is the highest grade. Pretty rare.

Fark, those look promising! I agree that I am not wild on the headband, but the cups and pads look very promising. I wonder if they are just using the Jmoney denon pads for it? I am definitely going to have to hear this one, just hope it isnt too much more than the LCD-1.

I thought all double crowns were S2, is this not so? Not a TDA1541 aficionado or anything.

And I thought Dusty was getting into a whole new line of website design.

Indeed. Cut the extension down to whatever length you want and put a WPI plug on it. All the info you need is here.

Its a very easy DIY.

x2, its all about how everything is implemented.

I get that fairly often too, generally assume they have gotten used to no one being home. Dunno.

Interesting choice, Steve. Dual Sigma22, but just one Beta22?

Old one for $100 shipped off a'gon.

Hafler DH-120

I bet that will be fun, Steve. Man, I would love to hear the K1000 out of an F5.

Just got back from a 5 mile run. I dunno what it is, but I find I love running at night. Bit different than the 5 hours or so I spent soldering last night at this time.

2 pence pieces, actually. Opened it to try and figure out what was rattling...

Yay, moar DACs!

Pulse transformers ftw.

Yeah, you would probably drop bits if it is delayed for more than the buffer can handle. I just kinda doubt that this is a real issue, unless you are having other PC problems, and then you would generally have the same issues with an adaptive solution, or PCI soundcard outputting SPDIF (which is what I currently use). x2

If it is bad enough, it is possible to drop bits, but the data is all fifo buffered in the receiver, so I dont really see how jitter would be present on the interface. Yeah, you will get some new jitter in the DAC, but this would have to be far less significant than what you would get from a recovered clock scenario. Plus, you can use that nice, clean clock to reclock the data again as it leaves the digital filter.

Yeah, CDs basically couldnt be constant RPM. Its not like they get progressively tighter data encoding on there. Plus, any half decent transport buffers the disc read.

The SPDIF is probably worse, but a good SPDIF receiver should help clean it up. Also, its much easier to get galvonic isolation of the SPDIF signal, which, especially sourced from a computer, is a good thing in my book. Dusty is right though, both the SPDIF and I2S outputs from the PCM270x are recovered clocks, and the internal PLL of the receiver isnt all that good at cleaning them. Async is really the best way to do it from a jitter standpoint, though a good PLL and reclocking would go a long way. I know some of the Tent secondary PLLs, for example, claim single digit ps range jitter figures, which is just superb.

Its very possible to have high jitter i2s, and what you get out of the PCM270x is quite high. Forget the measurements I have seen, but somewhere around 1ns IIRC. Also distortion goes out through the roof every 1ms as it resyncs or something. A good PLL/reclocking solution should significantly improve this. Of course, if you are async, then you can just take the masterclock signal that is feeding the USB chip and use that to directly reclock, and get the best of both worlds. Too bad that is so rare.