kevin gilmore

I don't think mikhail can count... 6 boards with 4 bipolar per board... Thats 24 Now what did you say mikhail was doing with his hands ??

Must see inside pics. Bet there are no blackgate output caps... Or blackgate input caps... or bipolar mascquerading as fets... bet there is no $10 usb to audio converter either... obvious fail and its way to cheap... and it works too...

vintage silver mica !

By the way i would like 4 boards minimum 8 boards maximum. I'll build them myself...

Lets see, I can buy the thing, gut it, use the really good yamamoto tube sockets wire in a bamaslama board, and end up with something really nice that looks like a crappy hand painted with a spray can singlepower... Yep, thats definitely it.

the denon is even worse than the sony. Its time to chuck all the legacy crap. And who in their right mind is going to use one of these beasts to actually run 2 rooms. No more s-video. No more composite video. No more component video. That empty's out more than half the back panel right there. And someone needs the brains to put in an atsc transmitter. (but that one is a bitch)

I expect that you will see the sony parts show up in the emm labs stuff sooner or later at silly pricing. I'll continue to use the krell for 5.1 audio output till an appropriate proc/preamp comes along. Then i'll get another sony. I figure for upstairs the perfect personal system is a 5400es and a bhse.

stax wiring diagram at the bottom right next to the koss wiring diagram. Both are complete and correct. there is also this http://en.wikipedia.org/wiki/Stax_Earspeakers

The feedback is EITHER from the output stage, or stage 2. Not correct as shown in jacob's schematic above. Or in multiloop, a resistor from the output stage to input- AND a resistor from stage 2 to input-. Plus compensation cap on the output stage, and possibly the second stage. I never messed with the multi-loop, and the prototypes have feedback from the outstage only.

good reference for wiring the jacks here ESP/950 Electrostatic Stereophone - Wikiphonia

I know that it is completely counter-intuitive, but if you want a dac that has the same parts as the 5400 in it (and the same exact sound qualities) then you have to buy the str-da6400es receiver, and use just a very small part of it. Soon there will be a preamp/processor that is the same as the 6400 without the power amps inside. So many of the single box very expensive sacd players have el-crapo mech's that it makes sense to buy something cheap that sounds great, and when it breaks you throw it out and get a new piece of mechanics. The D/A lives on. The new oppo blu-ray play everything machine for $500 is one really good example. The only reason you would want an input to a player would be to hook up some kind of computer based device. For $.25 or less burn a RW and use that instead.

You might want to wait till the sucessor of the 9es proc/preamp comes out. It will be balanced out, and use those new dac chips. Of course it will come with lots of other stuff you don't probably want, but that is going to be the future like it or not. There is the new sacd portable coming out in the next few months. I doubt it is going to have a digital input. There would be no reason to do so. scd1 << krell sacd standard < 5400 !

Total of 12 dac's in the thing. 4 for balanced dsd. 4 for balanced pcm. 2 for unbalanced dsd. 2 for unbalanced pcm. DSD (2 channel) on both analog outputs and hdmi DSD (5.1 channel) only on hdmi outputs

That is all that is hooked up now. Don't have the balanced processor/preamp yet. (vaporware)

I really love mine. Don't know what to say other than that. Better than the krell sacd standard. 2 channel balanced output. hdmi output. Don't know about the super expensive sony piece other than it does NOT have hdmi. Does not even have balanced. More of sony's unplugged fly by wire approach to management.

Labcenter Ares 7.1

Output export types are bitmap (no holes seem to show thru) metafile (never figured out how to use this) dxf (don't have autocad) eps vector (useless as far as i can tell) overlay (not even sure what this is)

I don't remember. If you make a board that can take all of them, you can populate only half if you want to. Probably makes absolutely no difference unless you are driving 8 ohm speakers.

Remember that all the board files i posted use the dual jfets and the dual cascode parts. All of which are almost impossible to get.

here are the 4 board layouts suitable for production http://gilmore.chem.northwestern.edu/dynahifeti.zip http://gilmore.chem.northwestern.edu/dynahifetihs.zip http://gilmore.chem.northwestern.edu/dynahifetr.zip http://gilmore.chem.northwestern.edu/dynahifetrhs.zip schematic above is correct except that i doubled the number of output transistors.

If you spend the time and can actually get the parts, you can do much better. These days, getting the parts is the hard part. The other thing is that most opamps are limited to +/-15 volts. If you want something in a class above that, it has to be discrete.

See here is the problem. You can't have good pnp's and npn's on the same piece of silicon no matter what you do. You optimize one, or the other, not both. One has to be vertical, the other has to be lateral. In theory with really well matched discrete parts, you can do much better.

brand new auto rethreading edm machine

I'll definitely take a number of heatsinks. As a quad, it would be cool, but doing a rip up of the layout to get all 4 input fets close to each other might be rough.

I'm very interested in the edm cut heatsinks... Did not even think of using an edm that way. Have a brand new edm that i'm going to have to learn. Those don't look edm'd though, unless they were anodized afterwards.