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What is your current project, or what will be your next project?

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  • Author

Guys,

Looking for a killer output stage for my Denon 3930.

must do I/V, filtering and amp/buffering. True Balanced output is a requirement.

Any ideas?

anyone want design one, and do a group buy :angel:

SMD would be fine ;) must fit into a CD/SACD player for modification

zapfilter.

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KG says its not a very good design...

What would be better?

If I'm not mistaken, unless the Denon has 2 DAC chips (assuming that it uses a dual) or 4 single DAC chips, then basically anything would be pseudo/cheater balanced because you'd need something to do the phase inversion.

A new design by KG?

Yup that's what we need!

And then someone to make up an smd board and do a group buy :dance:

If I'm not mistaken, unless the Denon has 2 DAC chips (assuming that it uses a dual) or 4 single DAC chips, then basically anything would be pseudo/cheater balanced because you'd need something to do the phase inversion.

It has one Burr Brown 1796 (dual dac chip) per channel.

  • Author

If I'm not mistaken, unless the Denon has 2 DAC chips (assuming that it uses a dual) or 4 single DAC chips, then basically anything would be pseudo/cheater balanced because you'd need something to do the phase inversion.

I'm gonna invert you if you don't sell me your NOS grins.

Otherwise I can't say that I recommend tube based output stages for sources. Given how tubes react to different impedance loads my preference is solid-state sources for flexibility and less worry.
Hmmm, maybe a hybrid design?

Actually, now that I've actually read the page on the Opus... :-[ ...it looks like the output stage is on the DAC board anyways. So, I guess if I want to do a custom output stage I could just use a wm8740 evaluation board or something like that.

  • Author

anyone want to team up and write a DAC in VHDL with me? >:D

I already wrote a 8 bit one, but that's clearly not going to cut it.

  • Author

Just finished soldering in 4000uf of capacitance to my tube amp. Hum is ALMOST gone with my 701. Its quiet enough that I don't care, because it would take a rebuild to fix it.

Just finished soldering in 4000uf of capacitance to my tube amp.

Is that on the B+ or the low voltage filament heater supply?

Finally got the drywall and painting done in the private listening room and moved in tonight! :dance:

Nothing fancy, but it's kinda nice to have a quiet, private place to call my own. Just moved in the seat and gear tonight along with the desktop/music server and some of my CD's. Figure I'll need some wall art and some nic nacs to make the place feel a bit more warm and homey.....and maybe a smaller plasma/LCD for gametime. Heck, as long as it's MY place, I could leave it just like that and be quite satisfied. Feels good....real good! Okay, it's not a high tech build like you DIY'ers are working on, but hey, I'm pretty happy. ;D

pics now

It's still quite sparse and well...not finished but it's all mine.....

img0582sg1.th.jpg

img0584lh4.th.jpg

img0580ko6.th.jpg

img0585ez1.th.jpg

very nice room Ken! my little listening area is totally cramped right now. I need to sell some shit. :-\

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