XMOS-based Asynchronous USB to I2S interface

[staki]

Happy new year to all the diyers !

[Kazuya FR]

HNY everyone !

I have a question, I didn't find any answer in the topic about it...

Do this Xmos chip can let passthrough AC3 and DTS multi-channels streams ?

[kp93300]

Originally Posted by clivem

The A13-OLinuXino-WIFI is an interesting board at a nice price, using a GL850G for USB hub, which from my experiences with external powered hubs which use the same chip, is not going to be a problem with Linux. I don't suppose anyone has tried the WaveIO with this board?

Hi clivem
Any follow up on this product and the wave card ?
thanks

kp93300

[JLOP]

Originally Posted by Kazuya FR

HNY everyone !

I have a question, I didn't find any answer in the topic about it...

Do this Xmos chip can let passthrough AC3 and DTS multi-channels streams ?

Still question about SACD

[bonalux]

Hi all and happy new year!
I want to report my experience with the WaveIO: finally after more than three months working (in the spare time obviously ) on rebuilding my dac, i've manged to finish it and do some serious listening test, well, reading the post in this forum my expectations were high, but they had been exceeded a long way!!

Onestly, never listened to such beautiful sound coming from speakers, and i'm sure much of the merit is for the WaveIO, because my dac was only tweaked a bit (double PCM1704K in nos mode with resistor I/V conversion and jfet amplifier + buffer, i'm using isolated I2S output) in the psu. Lucian philosophy of very good psu and well engineered layout (that is also mine) it's for sure a winner.

I'm listening it thru an Alix 3d2 board with mpdpup 0.9.3a installed with the stock tweaks, music files are on a separate nas, very short (0,5 mt) and high quality usb cable, highly recommended!

At this point i don't think is it possible to gain much more from such a high quality card Lucian, but i'm looking forward to see your next project i'm always ready to be wrong.

DIY it's a never ending story!

Bye.

P.S.: just to tell the whole story, with the WaveIO i've found one little problem and is that if you boot the card before the pc (or you have to reboot the pc but don't turn off the WaveIO), the card is not recognised at the restart, and you have to turn it off and on to let it work again. It's surely an hardware/firmware problem of the card, because also with windows there is the same problem and chances are that it's due to the fact i'm powering the card with a separate psu and not from the usb. Powering from the usb probably the card is resetted with the pc when you reboot, i say probably, never tested it.

[Blitz]

I came to a similar conclusion...with a Alix 1 card and a sotm usb-card which gives you even more natural sound than the Alix 3d2 which I tried as well...still woundering if the isolator chip i use from the waveio card should really get its power froma sep.supply or from the Buffalo Dac to have the same ground and psu noise ?

[clivem]

Originally Posted by kp93300

Any follow up on this product and the wave card ?

Sorry, not from me. I haven't bought a A13-OLinuXino-WIFI. Took the easy way out and ordered the CuBox, where I could be 100% sure that it would do what I wanted it to do.

[bonalux]

Originally Posted by Blitz

I came to a similar conclusion...with a Alix 1 card and a sotm usb-card which gives you even more natural sound than the Alix 3d2 which I tried as well...still woundering if the isolator chip i use from the waveio card should really get its power froma sep.supply or from the Buffalo Dac to have the same ground and psu noise ?

Don't know if a dedicated supply can be better, mine actually is derived from the 3.3v supplying the shifter board (so the noise on the supply is in phase with the one from the optocoupler), but it's very well filtered and generated from an LF33C ic that then it's supplied from a 12v line with a LM7812 and that has an RC filter, so zero ripple and very low noise on the 3.3v output. Also my Alix board got a linear supply with CRC filter + LT1086, i've tried a cheap switching psu but the sound becamed unlistenable! The linear psu wastes ~2 watts but the increase in SQ it's priceless!

@Blitz: did you experience the same problem on reboots as mine?

[staki]

Originally Posted by bonalux

P.S.: just to tell the whole story, with the WaveIO i've found one little problem and is that if you boot the card before the pc (or you have to reboot the pc but don't turn off the WaveIO), the card is not recognised at the restart, and you have to turn it off and on to let it work again. It's surely an hardware/firmware problem of the card, because also with windows there is the same problem and chances are that it's due to the fact i'm powering the card with a separate psu and not from the usb. Powering from the usb probably the card is resetted with the pc when you reboot, i say probably, never tested it.

Did you try to use a master/slave power strip ? With the pc on the master side and the waveio on the slave side ?
I am not sure at all, but that could help......

[Ben Mah]

Originally Posted by bonalux

P.S.: just to tell the whole story, with the WaveIO i've found one little problem and is that if you boot the card before the pc (or you have to reboot the pc but don't turn off the WaveIO), the card is not recognised at the restart, and you have to turn it off and on to let it work again. It's surely an hardware/firmware problem of the card, because also with windows there is the same problem and chances are that it's due to the fact i'm powering the card with a separate psu and not from the usb. Powering from the usb probably the card is resetted with the pc when you reboot, i say probably, never tested it.

My WaveIO is powered by a separate supply and it is always on. It is connected to a Pogoplug running Debian/mpd and rebooting the Pogoplug with the WaveIO powered up has not been a problem.