Prototyping AK4395 based DAC

macgyver · 4th June 2007, 05:16 AM

I have almost finished my latest project. It's based on AK4114 receiver, AK4395 DAC, OPA1632 filter (still testing some filters) and PGA2310 volume chip. I'm controlling the AK4114, AK4395 and PGA2310 with ATmega8535 controller. Display is 2*16 VFD and I use rotary encoder for reading volume. I also have button and spdif boards (no pics yet sorry).

Here are some pics (I update when I get new data/pics):

Pics

Some of the pics ain't good

hifimaker · 4th June 2007, 02:44 PM

I've been experimenting with an AKM4396 DAC and it sounds marvilous. Why not use the digital attenuator on the DAC rather than a PGA2310? Just curious.

Nice looking boards.

-David

macgyver · 4th June 2007, 05:35 PM

Here is the reason for PGA2310 (I don't want to attenuate the digital signal, only analog):

Link

I also have AK4396, maybe I build USB DAC with them.

SunRa · 4th June 2007, 05:52 PM

Hello,

Could you tell me where did you source your AK4396 converters from?

macgyver · 4th June 2007, 06:51 PM

Quote:

Originally posted by SunRa
Hello,

Could you tell me where did you source your AK4396 converters from?

I asked samples from my local retailer.

hifimaker · 4th June 2007, 09:51 PM

Quote:

Originally posted by SunRa
Hello,

Could you tell me where did you source your AK4396 converters from?

I got mine from the local AKM sales office here in Silicon Valley.

-David

SunRa · 5th June 2007, 05:53 PM

Thank you for the answer...

macgyver, your boards are looking prety neat. What process did you use for making them?

And could you post some schematics?

macgyver · 5th June 2007, 06:41 PM

Quote:

Originally posted by SunRa
Thank you for the answer...

macgyver, your boards are looking prety neat. What process did you use for making them?

And could you post some schematics?

Boards are made with milling machine (not mine). I don't post schematics now, maybe later.

maxlorenz · 5th June 2007, 10:30 PM

Congratulations Macgyver, very nice looking DAC.

I wish I could build something like that

Have you considered using (instead of AK4114 receiver?) one of the attractive Sample Rate Converters from AKM like AK4125 or AK4127.

Owning a modified M-Audio superDAC (AK4393) fed by an upsampler I can tell that it does make a difference.

Good luck,
M

macgyver · 7th June 2007, 04:01 AM

Quote:

Originally posted by maxlorenz
Congratulations Macgyver, very nice looking DAC.

I wish I could build something like that

Have you considered using (instead of AK4114 receiver?) one of the attractive Sample Rate Converters from AKM like AK4125 or AK4127.

Owning a modified M-Audio superDAC (AK4393) fed by an upsampler I can tell that it does make a difference.

Good luck,
M

Thanks

I haven't thought about it. The AK412X would come after the AK4114.

4th June 2007, 05:16 AM	#1
macgyver diyAudio Member Join Date: Aug 2002 Location: Finland	Prototyping AK4395 based DAC I have almost finished my latest project. It's based on AK4114 receiver, AK4395 DAC, OPA1632 filter (still testing some filters) and PGA2310 volume chip. I'm controlling the AK4114, AK4395 and PGA2310 with ATmega8535 controller. Display is 2*16 VFD and I use rotary encoder for reading volume. I also have button and spdif boards (no pics yet sorry). Here are some pics (I update when I get new data/pics): Pics Some of the pics ain't good

5th June 2007, 10:30 PM	#9
maxlorenz diyAudio Member Join Date: Oct 2003 Location: osorno , Chile	Congratulations Macgyver, very nice looking DAC. I wish I could build something like that Have you considered using (instead of AK4114 receiver?) one of the attractive Sample Rate Converters from AKM like AK4125 or AK4127. Owning a modified M-Audio superDAC (AK4393) fed by an upsampler I can tell that it does make a difference. Good luck, M __________________ Cheapest horn speakers: https://picasaweb.google.com/lh/phot...eat=directlink

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4th June 2007, 02:44 PM	#2
hifimaker diyAudio Member Join Date: Oct 2003 Location: San Jose	I've been experimenting with an AKM4396 DAC and it sounds marvilous. Why not use the digital attenuator on the DAC rather than a PGA2310? Just curious. Nice looking boards. -David

4th June 2007, 05:35 PM	#3
macgyver diyAudio Member Join Date: Aug 2002 Location: Finland	Here is the reason for PGA2310 (I don't want to attenuate the digital signal, only analog): Link I also have AK4396, maybe I build USB DAC with them.

4th June 2007, 05:52 PM	#4
SunRa diyAudio Member Join Date: Aug 2004 Location: Romania	Hello, Could you tell me where did you source your AK4396 converters from?

5th June 2007, 05:53 PM	#7
SunRa diyAudio Member Join Date: Aug 2004 Location: Romania	Thank you for the answer... macgyver, your boards are looking prety neat. What process did you use for making them? And could you post some schematics?

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