Topic: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD) (Read 17059 times)

Hroðulf · « **Reply #10 on:** November 06, 2013, 08:18:16 PM »

Btw, did you match the fets on the JG? Are you getting any DC on the output?

MisterRogers · « **Reply #11 on:** November 06, 2013, 09:12:16 PM »

The JG is sold with the fets matched and soldered. The rest of the BOM is up to you. The Fastron Inductors/Chokes should be matched to 1%, but I've found they're pretty tight coming from Mouser (at least in my batch)

Hroðulf · « **Reply #12 on:** November 06, 2013, 09:47:34 PM »

Hmmm... This looks like an interesting project. Might hold off on buying a smaller case for my Sjostrom QRV-08 and stuff it into a 1A rack case together with four super regs and this DAC. Any idea on the current draw of these devices?

MisterRogers · « **Reply #13 on:** November 07, 2013, 02:27:17 AM »

The USB/XMOS side is ~400ma. The Reclocker/DAC side is about ~140ma.

Chris1967 · « **Reply #14 on:** November 07, 2013, 09:39:21 AM »

Quote from: MisterRogers on November 07, 2013, 02:27:17 AM

The USB/XMOS side is ~400ma. The Reclocker/DAC side is about ~140ma.

Excellent... i noticed the variation on the Salas shunts...

Is it asking too much too much to tell us what components and values you used on the two different Salas shunts?

MisterRogers · « **Reply #15 on:** November 07, 2013, 12:27:07 PM »

Not at all. It's fairly straight forward. For smoothing caps, I always use either ELNA LAO 10000uf >=63v or Nichicon fine gold similar capacity. I have a preference for hexa ultra fast diodes in my Salas shunts. Any good MKS4 or MKT for the *02/*04 caps will work. For digital, the *02 cap should be a good 220uf lytic. One of my favorite caps is the Elna Silmic II's. They work very well in this position, but a good Panasonic, or Muse is.. well good here too.

That's about it. Use the provided (in the build threads) calculator to dial in the rest of your component values. For those, I just use well rated, good components.

Chris1967 · « **Reply #16 on:** November 07, 2013, 01:52:06 PM »

Thank you very much!

MisterRogers · « **Reply #17 on:** November 07, 2013, 03:47:52 PM »

No worries mate!

MisterRogers · « **Reply #18 on:** November 12, 2013, 11:58:46 AM »

Thought I'd share what might be good news to some of you. I've been chatting with Lyuben - part of the team that designed and sells the XMOS/AK stack that I build this DAC around about designing an optimized JG filter that would stack cleanly on top of the other two boards. This just seemed really cool to me; a low profile, "just add power' stack that could handle PCM/DSD.

Drum roll... They've agreed to design/build such a board. So in the near future, anyone interesting in putting together a similar DAC will be able to do so without messing with the 0603 SMD's that the very small JG Filter requires. I'll keep this thread up o their progress, as I hope to be testing prototypes for them.

Hroðulf · « **Reply #19 on:** November 12, 2013, 07:38:57 PM »

If only they would add digital volume control...

Author Topic: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD) (Read 17059 times)

Hroðulf

Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)

MisterRogers

Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)

Hroðulf

Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)

MisterRogers

Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)

Chris1967

Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)

MisterRogers

Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)

Chris1967

Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)

MisterRogers

Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)

MisterRogers

Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)

Hroðulf

Re: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD)

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Author Topic: slimline dac with the AK4396, and an XMOS USB receiver (>= 384 PCM/64/128 DSD) (Read 17059 times)