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PCB Group Buy for the "DAC + headphone amp" Project

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kct

kct

Member
Joined 2006
Well, here are the files with the mod's I had made, in case anyone is interested.

Here a short summary of the changes I made.:

- added option for Optical Out with Buffer IC and decoupling Caps.
- moved power configuration to make some room
- moved fuse holder slightly
- moved Regulator components IC U11, C47, C22 to get clearance for installation in case
- changed capacitor footprint to accept different capacitor pin spacing
- moved the transformers closer to each other
- repositioned Crystal and C34
- added option for LED1, R33 (I like to see if the unit is powered)
- put a trace underneath the D/A chip, 0 Ohm R28 can be omitted then
- added a MCP120T as Gary had suggested
- and changed Label to HD-1.2 to up-rev it.


Cheers

Kay
 

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  • hpa_1.2.zip
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kct

kct

Member
Joined 2006
Oh man, I just got a fine Denon AH-D5000 headphone for this "unfinished construction site", boy what a kick a$$ combination this is with the HPA.

(Ear)candy at it's finest.

Cheers

Kay
 

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  • denahd5000.jpg
    denahd5000.jpg
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M

Mike D

Member
Joined 2002
Oh wow... I had almost forgotten about this project!

My board sits half finished somewhere (need to order resistors & other small parts) , but now I have the cash to complete... I wonder if I'll ever find the time?!?

Anyone using this box with DT880's ? That's my plan... Along with one of the USB > SPDIF converter PCBs that was floating around long ago.
 
J

jeff-o2000

Member
Joined 2009
instructables.com/member/jeff-o/
Well, I haven't forgotten! Of course, if this were a pot on the backburner the contents would have caramelized by now...

I managed to get a lot of the pricey TI and AD parts as free samples, and went through the parts list to see how the prices had changed. It looks like I'd be able to build it for about $220-$250, but to do that I'd have to order four PCBs and sell three of them. I'd much rather buy one board!
 
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