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Amanero Isolator/Reclocker GB

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#1,361
Hi Acko,
I am ordering the parts for the S03 that you just send me and it is no clear to me how can install the C4 PP film capacitor that is in the place of the parts for the 3 optional VDO. Can the parts stay just under the PP film cap?

Thanks and Regards,
Enrico
 
#1,362
emyeuoi said:
Hi Acko,
I am ordering the parts for the S03 that you just send me and it is no clear to me how can install the C4 PP film capacitor that is in the place of the parts for the 3 optional VDO. Can the parts stay just under the PP film cap?

Thanks and Regards,
Enrico
Click to expand...

Yes, the big C4 will mount on top without having to remove parts below. Don't forget to remove the 4u7 ceramic cap first
 
#1,363
PET-240 said:
Heya Acko,

Thanks for that, how dare you be busy elsewhere! Are you expecting to have a life!
Shall be whacking an order through, just curious your thoughts on whether it is worth getting the single clocks or run with getting both the separate NDK and the dual clock NDK sample and figure a way to get them both to be swappable. There's some good English for you.

Thanks,

Drew.
Click to expand...

...... Mercy:scared:

FYI, new modules will use the S03 Black and no daughter boards necessary.
NDK NZ2520 loaded direct- default build with your choice of frequencies
If you have other preferences, please advise before ordering.
As Jason explained you can easily remove these tiny crystals and swap with other types.
 
#1,365
BBB-S03

Initial results from an early adopter:

Equipment is a commercial DAC with USB-I2S built-in and driving 9018 chip in Sync mode internally. Good sounding setup with performance better than some of the cheap 9018-based DIY DACs out there. DAC has options for external I2S connection via RJ45 interface

1.BBB-I2S connection sounds better than USB
2.Adding S03 module with connection as shown produced even better results
 

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#1,368
I'm looking to do a BBB -> AMN-S02 with AKX302 Clock board -> ADK23P with full sync. Any chance I can use the OTTO-II from TPA and switch between the BBB and Amanero? Also, In this implementation am I more wise to use 22/24 clocks instead of the 45/49 clocks? It looks from an earlier post from Acko that this was being suggested.

I do also have an S03 board that had the mistake with full sync and Amanero pin outs. If I decided to use this board instead how would I be affected?
 
#1,369
@Acko, If I was to install two clocks 45/49, would that still work with the RPi? I'm looking to experiment both with the BBB and the RPi, haven't made up my mind yet.

One more question, a high res picture of a fully populated board would be useful if you can make one.
 
#1,370
Hi Acko,

Received my S03 board last weekend, thanks!
I am thinking of using these isolators:
http://www.ti.com/lit/ds/symlink/iso7640fm.pdf

Will these be suitable?

For powering the three different (exept for isolator chip input side, this will come from the raspy pi) I am thinking of using one 5v power supply taken from the dddac board. For the clock a local shunt regulator will be used on the S03 board.
Will this be sufficient, or is there a benefit in splitting these?
What will be the total power consumption?


Regards,
 
#1,371
acko said:
Initial results from an early adopter:

Equipment is a commercial DAC with USB-I2S built-in and driving 9018 chip in Sync mode internally. Good sounding setup with performance better than some of the cheap 9018-based DIY DACs out there. DAC has options for external I2S connection via RJ45 interface

1.BBB-I2S connection sounds better than USB
2.Adding S03 module with connection as shown produced even better results
Click to expand...

Tuebo MCK is better than MCK in Sync. mode according to my experience.
 
#1,375
acko said:
Sorry to hear about the delivery issues - being returned for some reasons but yet to receive it. Was so looking forward to your test results. If nothing happens by the end of this week, I will arrange replacement
Click to expand...

Sounded like the plan, Acko! Really appreciated.
Hopefully no more incidence as such sticky labels are came off due to inefficient courier service.

Look forward hearing from you soon.

Cheers.
 
#1,376
acko said:
The jitter elimination is relative to the reference clock driving the output FFs.
The absolute jitter performance is dependent on the phase noise of the clock itself. The lower the phase noise the better the outcome.
Click to expand...

Noise figures in the range 10Hz-20KHz matters most for audiophile grade applications.
The key figure to look out for is the "Close-in" phase noise ,i.e the value at 10Hz - the lower the better. See comparison graphs example.
 

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#1,378
Acko: I've been thinking - haven't you been thinking about designing a dual mono PCM1974 dac to accompany this? As that dac-chip is alot less forgiving about I/V converter (not needed such low loading) afterwards i think this would be perfect for that dac. Problem seems to be to find any dac that seems as good built as your designs, and uses u.fl and short i2s paths on it's own pcb?
Sorry for offtopic - but at least i would be interested in such dac. 🙂
 
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