Just for fun

[Koifarm]

 

[jacques antoine]

Do the LME's need heatsinks? Could you show the copper side of your build? Unfortunately your PCB link does not work.
Very nice & clean work.

Jacques

 

[Koifarm]

Jacques, i have fixed the link to the PCB film.

And the LME49600 does not need to use extra cooling. It runs with my AKG 701 just a little warm.

Sorry but i have not a photo from the solderside and it is already in a nice housing. You must wait until i have the time to disassemble the housing to make some photo's.

Ronny

 

[Koifarm]

Just the schematic.

 

[Koifarm]

Found some pictures.
Still the best headphone amp. This wire clone.
I can place gerber files if wanted.

 

[RickTH]

I already got them when you posted a link on
https://www.diyaudio.com/forums/headphone-systems/364756-opa828-lme49600-combination-2.html
Funny enough , I was just thinking about your design . I'm trying to make my PCB design like the recommended layout , found in the datasheets , but it is hard . And then I go look at yours , thinking Koifarm is more "spacious" and doesn't have oscillation ....
Those 2 red caps near the opamp , are they the 100nF MKT's ? And only the 2 regular 10uF E-caps for the LME49600 ?

 

[Koifarm]

Yes and yes.

Build also hybrid headphone amp with lme49600 and 6p1.
Has only 1uf caps.
PCB for lme49600 i got from ebay.
1PCS LME49720NA+LME49600 headphone amplifier PCB | eBay

 

[RickTH]

Only 1 uF for the LME ? That's living on the edge .
And again MKT's .
What is a 6p1 ?
And this ?

 

[Koifarm]

There are some big elco's nearby the lme49600.
6p1 is a fluoriesence double triode tube for low voltage. Used in guitaramps and synthesizers for adding harmonic distorsion used by Korg.

Korg NuTube is now available online

Korg nutube 6p1 tube buffer/harmonizer

 

[RickTH]

^ Cool , thanks .