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Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter
Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter
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Old 6th November 2012, 05:56 PM   #1421
MisterRogers is offline MisterRogers  United States
Can you say Audio?
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Location: Aurora, Colorado
Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter
I'm using the eXD board in a couple of builds with good results.
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Old 6th November 2012, 06:13 PM   #1422
Jackal29a is offline Jackal29a  Spain
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Location: Madrid - Spain
No, at least there are another two, the ExaU2I (ExaU2I) and the above mentioned exD (exD) but at $399 they are 10x the price and the former, in its current version, can only play DSD through a propietary app though it does MCh.

BTW, it is possible to rip native DSD files (ISO, DFF or DSF) in either stereo or MCh from any SACD disc using one of the older PS3s. Some infosacd-ripper:

Last edited by Jackal29a; 6th November 2012 at 06:14 PM. Reason: (simultaneous posting)
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Old 6th November 2012, 08:22 PM   #1423
MisterRogers is offline MisterRogers  United States
Can you say Audio?
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Join Date: Aug 2011
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Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter
I've used all three, and they each have their strengths. The eXD and the ExaU2I sound better in stock form (and of course, the exaU2I doesn't do DSD apart from some monkey business). I'd be very pleased if with using a PS instead of USB power the Combo384 performs at a similar level as the other two.
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Old 6th November 2012, 09:01 PM   #1424
Telstar is offline Telstar  Italy
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which is the eXD interface? I thought before it was same thing as exaU2i...

Nevermind, googled for it
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Last edited by Telstar; 6th November 2012 at 09:08 PM. Reason: found it
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Old 6th November 2012, 09:10 PM   #1425
MisterRogers is offline MisterRogers  United States
Can you say Audio?
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Join Date: Aug 2011
Location: Aurora, Colorado
Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter
Click on the 'exD' in post #1422 above. Separate board. Overall, very well done. Good onboard regulation, accepts 6V PS, separate headers for I2S and DSD (they can flash the firmware to multiplex I2S/DSD for the ESS chips that support both).

I've been using one of these with FIFO; OttoII handling the switching duties. Very nice.
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Old 6th November 2012, 11:57 PM   #1426
iancanada is offline iancanada  Canada
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Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter
I'm waiting for the TPS7A4700 PCB to test my Si570 clock board. Hopefully I can get them this week.

Si570 driver firmware programming job are almost finished with partly opening the frequency control function to the third party external controller.

Isolator board also reserved an isolator footprint for the external controller, as well as an isolated I2C port for the DAC (ESS9018).

Ian
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Old 7th November 2012, 03:02 AM   #1427
Bunpei is offline Bunpei  Japan
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Quote:
Originally Posted by iancanada View Post
Is that Amanero the only USB capable for native DSD output so far?
In Japan ElectrArt's "USB Dual Audio" board is very popular among local DIY users.
USB DSD DAC and ADC by ElectrArt

The board supports DSD64, DSD128 and DSD256 of both 44.1kHz & 48 kHz series.
Moreover, he is preparing PCM to DSD256 or DSD512 converter hardware board.
USB DSD DAC and ADC by ElectrArt
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Old 7th November 2012, 06:25 PM   #1428
makumba1966 is offline makumba1966  Poland
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Join Date: Feb 2010
Location: Gdansk
Default Si570 interest list:

1. bigpandahk
2. tagheuer
3. hochopeper
4. qusp (of course)
5. AR2 - definitely!
6. wktk_smile
7. hirez69
8. CeeVee - you bet!
9. number9
10. analog_sa - GB maniac
11. edbk
12. atom6422
13. misterrogers - Of Course!
14. NicMac - as usual!
15. Zoran 16. PET-240
17. Coolhead
18. Slartibartfasst
19. SYklab
20. Regland
21. Neb001
22. SPWONG
23. Greg Stewart (also of course!)
24. Vitalica
25. spm
26. Fridrik
27. ccliu
28. makumba1966
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Old 9th November 2012, 03:41 AM   #1429
coolhead is offline coolhead  Malaysia
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Join Date: Mar 2010
Default Battery management board test 1

Last night did a brief test with it. 3 scenarios:
1. Default power supply from FIFO board (6v)
2. Power by salas bib shunt regulator tune to 180mA ccs, 6v
3. With the power management board, 4x rechargeable NiMh Sanyo AA battery 2000mA, 5.6v fully charge.

I don't have tool to measure, only depends on my ear. I think 2 is the better by a hair to 3. With separate power supply, it is more refine, smooth and bass in better.

My configuration is simple Sony 338esd -> coax -> FIFO -> coax -> BII -> tube I/V -> amp.

I have a phone LiPo battery, i am thinking of removing U7 on the clock board and direct feed the power there. But the battery is 3.6v, can it be use?
Thanks.
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Old 9th November 2012, 05:29 AM   #1430
qusp is offline qusp  Australia
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is it really 3.6 when fully charged?
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