[coli]

No but should be easy. Do you want/need true balanced out or can deal with the opamp buffer?

Which ever sounds better I guess. I want to know if the Soekris can sound good enough to replace very expensive DACs since I'm looking for a multichannel solution.

 

[BucketInABucket]

Which ever sounds better I guess. I want to know if the Soekris can sound good enough to replace very expensive DACs since I'm looking for a multichannel solution.

The opamps used deteriorate the sound if you ask me. They can be replaced if you're skilled with a soldering iron but it's risky.

Also, to make it rival top commercial offerings, you really need to do your homework with regards to how you implement it. For example, a simple traffo connected to the DAM1021 won't make it sound anywhere near it's top potential.

 

[dark energy]

I can confirm that a modded(most if not all board modifications) Soekris DAC is a great DAC. We compared it directly to a Yggdrasil and while, the later is better overall, it damn close. In fact, you aren't missing out on a lot with Soekris. It gets most things right.  Bested BMC PureDac in every way.

 

[Currawong]

I've really got to get a good PSU going for this now. The problem is choosing one. The last time I looked at PSUs, one that someone was using wasn't readily available. 

 

[abartels]

  I've really got to get a good PSU going for this now. The problem is choosing one. The last time I looked at PSUs, one that someone was using wasn't readily available. 

 
Hi Currawong,
 
Ever tried the diyinhk 0.8 uV low noise psu's? I love them for diy projects, they are of very high quality!
 
Those supplies are double version, both can be set to 3.3V - 5V or 7V ,so, two supplies for $59,95 thats cheap!
You need two transformers, or two windings from one transformer.
http://www.diyinhk.com/shop/audio-kits/89-08uv-ultralow-noise-dac-power-supply-regulator-3357v-15ax2.html
 
They also have +/- version, set as +/-9V, +/-12V, +/-15V
http://www.diyinhk.com/shop/audio-kits/88-08uv-ultralow-noise-dac-power-supply-regulator-91215v-15ax2.html
 
 
Regards,
 
Alex

 

[BucketInABucket]

If you don't mind advanced SMT, you can also look at the 'The Wire LT3042 Parallel Reg PSU' here.

 

[abartels]

  If you don't mind advanced SMT, you can also look at the 'The Wire LT3042 Parallel Reg PSU' here.

 
It's at the bottom of the (very long) page.
 
Since it has 4 LT3042 per supply it is a very costly psu. I understand it is very good, but since LT3042 ia about $5, and pcb needs 2x4 pieces,
it is $40 for LT3042 only, pcb costs $20, still other components needed.
 
Maybe it's not that expensive for this kind of psu, but maybe unneccessary for dam.

 

[RudeWolf]

It really depends on what you're trying to achieve with your PSU. If you hook the DAC up to a very quiet PSU, chances are that the inner PSU circuits might pollute the clean DC rails.
 
In other words, don't go too crazy!

 

[abartels]

  It really depends on what you're trying to achieve with your PSU. If you hook the DAC up to a very quiet PSU, chances are that the inner PSU circuits might pollute the clean DC rails.
 
In other words, don't go too crazy!

 
That's why I would LOVE a DAM version WITHOUT onboard regulator, with seperate connection points for all needed voltage stages.
In that case I could provide all stages with clean power, and, I myself could choose how crazy I would go in investing on very clean psu's 

 
So for now NO DAM for me, if in the near future a version will be available without regulator, including headers to connect several psu's to,
I will "be the first" to buy one!!
 
 
Regards,
 
Alex

 

[Currawong]

 

  I've really got to get a good PSU going for this now. The problem is choosing one. The last time I looked at PSUs, one that someone was using wasn't readily available. 

 
Hi Currawong,
 
Ever tried the diyinhk 0.8 uV low noise psu's? I love them for diy projects, they are of very high quality!
 
Those supplies are double version, both can be set to 3.3V - 5V or 7V ,so, two supplies for $59,95 thats cheap!
You need two transformers, or two windings from one transformer.
http://www.diyinhk.com/shop/audio-kits/89-08uv-ultralow-noise-dac-power-supply-regulator-3357v-15ax2.html
 
They also have +/- version, set as +/-9V, +/-12V, +/-15V
http://www.diyinhk.com/shop/audio-kits/88-08uv-ultralow-noise-dac-power-supply-regulator-91215v-15ax2.html
 
 
Regards,
 
Alex

Stupid question: What's the voltage input on them? I have a 115V/115V to 15V/15V 1A transformer handy, but otherwise would need to know what to get.

 

[abartels]

 
Stupid question: What's the voltage input on them? I have a 115V/115V to 15V/15V 1A transformer handy, but otherwise would need to know what to get.

 
What is the voltage needed for DAM, and how many amps?

 

[BucketInABucket]

What is the voltage needed for DAM, and how many amps?

Stupid question: What's the voltage input on them? I have a 115V/115V to 15V/15V 1A transformer handy, but otherwise would need to know what to get.

The recommended is about 3v higher than the output. I have a 2 x 15V + 2 x 9V transformer which supplies the +-12V, 5V and 3.3V required. For the 5V, ~500mA is recommended (for USB power). The others shouldn't need nearly as much.

 

[abartels]

What is the voltage needed for DAM, and how many amps?

 

Stupid question: What's the voltage input on them? I have a 115V/115V to 15V/15V 1A transformer handy, but otherwise would need to know what to get.

 

 
Quote:

The recommended is about 3v higher than the output. I have a 2 x 15V + 2 x 9V transformer which supplies the +-12V, 5V and 3.3V required. For the 5V, ~500mA is recommended (for USB power). The others shouldn't need nearly as much.

 
So, you need:
 
one piece http://www.diyinhk.com/shop/audio-kits/89-08uv-ultralow-noise-dac-power-supply-regulator-3357v-15ax2.html
with 1 psu set at 3.3V (needs 6VAC preferably, please do not feed with 15V since regulator has to dissipate a lot and gets hot) (I would say not beyond 9Volts)
with 1 psu set at 5V (needs 8VAC preferably, please do not feed with 15V since regulator has to dissipate a lot and gets hot) (I would say not beyond 12 Volts)
 
one piece http://www.diyinhk.com/shop/audio-kits/88-08uv-ultralow-noise-dac-power-supply-regulator-91215v-15ax2.html
set at +/- 12V (needs 15V-0-15V transformer)
 
PSU's can deliver 500mA without extra cooling.

 

[Vartan]

 
http://headphone.guru/canjam-at-rmaf-2015-brian-murphy/

 

[Currawong]

Looks like I really need to sit down and map out a build for this now. 
 
I imagine the easiest thing to get, in addition to the 15V transformer I have now, two more basic, ~1A transformers and two PSUs as per @abartels post and get the thing running.