New FIFO buffer for RPI/SBCs

[guglielmope]

Hello,
very impressive.
which kind of psu do you use for the tests? The board was connected with a Raspberry pi or with An I2s lab generator?
Best Regards.
Guglielmo

 

[cdsgames]

The PSU tested is not as good as our Nirvana PSU. (about 1mv of noise)
Boards (katana is made out of 3 boards) were placed on top of RPI 3 (not the 3b+) and took the i2s signals direct from RPI connector (rpi was in slave mode)

Basically we tested what people will have and use once they get the Katana.

 

[chris14]

Test was running with modified SMPS (good passive filter) and earthed on DC side.

Isolator is working with Katana but we never had a chance to test more, still from what I remember on Boss , I don't expect significant improvements on THD with isolation..

Can you quantify how much difference the earth connection on the smps made to test results?

 

[cdsgames]

Can you quantify how much difference the earth connection on the smps made to test results?

2.8mV to 1mV

 

[chris14]

Will you also market a pre configured player ( pi 3b+, katana boards, acrylic case and nirvana (x1 or x2) running Volumio and/or other sw ?

 

[cdsgames]

Yes we will. Instead of SD card we might change to eMMC (inserted in SD card slot)

 

[cdsgames]

I cannot quantify the THD+N that earthing influenced..since I don't have the test data.

 

[diyaudnut]

Could you post the recommended stack configuration with isolator, fifo/reclock, dac, IV and the required power supplies.

Thanks

 

[cdsgames]

1 psu for RPI , 1 PSU for Katana (5V , min 1A)

Recloacker is included (its a master), Isolator can be used but it will allow you only 32/192Khz (without isolator it plays 32/384Khz)
IV stage and summing also included (discreete opamp)
+- 15V (ultra low noise, also included)

 

[comickitkit]

Sound very delicious
May I pre-order a set?

 

[Martin12341]

I will check with team and get back

any news?

 

[chris14]

Hi Tim

first let me publicly say thx you for your great work. Its appreciated by the community and by myself . Katana will be sent for your testing from the first units.

Driver is almost ready.Will be submitted next week to mainline linux . You can change filters , volume etc. I will publish a doc on Monday from the main engineer.

Can we expect a detailed description/summary document on Katana/Nirvana soon?

 

[cdsgames]

Sorry but no pre orders .

 

[zek]

Any picture?

 

[jdubs]

Also, when will it be available for ordering?

-Jim

 

[gnat_leader]

Any picture?

A picture was given previously attached in a pdf file of post #96 of this thread...

An externally hosted image should be here but it was not working when we last tested it.

 

[cdsgames]

Can we expect a detailed description/summary document on Katana/Nirvana soon?

Soon , sorry for the delays but we are working on finalizing everything (including driver submission )

 

[r100]

If the Katana is better than the Piano 2.1 / Kali (because that Combo is great) then I will definitely get a Katana

looking forward to the Katana

 

[cdsgames]

Yeap it is.

 

[chris14]

Will the Nirvana be released prior to or along with the Katana sometime in June?