RE: Juli@ Digital output goes through an isolating transformer!

Posted by GStew (A) on September 5, 2011 at 22:03:58

In Reply to: RE: Juli@ Digital output goes through an isolating transformer! posted by audiofanatic on September 5, 2011 at 21:29:00:

Removing the Juli@ analog card and just using the digital when you are feeding an external DAC is a common setup. It is a good idea for you whether it fixes your issue or not.

Some go so far as to use the power connections on the digital card as a place to add local filtering/smoothing capacitors as shown below:

I have gone even farther and have replaced the Juli@ analog section with I2S-connected DAC cards... it has worked well for me, but it takes a bit of doing to get it going and more knowledge and experience than I have to get it going really, really good.

See attached pix.

Later!

Greg in Mississippi

P.S. Unless you've removed a lot of the extraneous processes in your computer, I suspect that the occasional distortion is caused by some non-playback-related process that starts up by itself stealing sufficient resources to interrupt the music flow. Just a guess, tho.

My 1st heavy Juli@ mod where I upgraded the regulators on the analog card and powered it with separate linear supplies (notice the wire pigtails). It sounded much better than it had any right to! Someday I want to go back to that setup & bypass the mixer stages & the Juli@ analog output opamps:

A Twisted Pear Buffalo 32 I did for another inmate here awhile back:

An ES9022-based card I got from a guy on DIYAudio.com:

The Twisted Pear Buffalo II I'm working on (slowly) now for myself:

Everything matters!

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Follow Ups Full Thread

Topic - Juli@ and grounding - audiofanatic 06:54:19 08/24/11 (15)

Juli@ Digital output goes through an isolating transformer! - GStew 13:18:55 09/04/11 (6)

RE: Juli@ Digital output goes through an isolating transformer! - phofman 00:47:18 09/05/11 (5)

RE: Juli@ Digital output goes through an isolating transformer! - GStew 13:43:18 09/05/11 (4)

RE: Juli@ Digital output goes through an isolating transformer! - phofman 13:51:11 09/05/11 (3)

RE: Juli@ Digital output goes through an isolating transformer! - GStew 14:22:18 09/05/11 (2)

RE: Juli@ Digital output goes through an isolating transformer! - audiofanatic 21:29:00 09/05/11 (1)

RE: Juli@ Digital output goes through an isolating transformer! - GStew 22:03:58 09/05/11 (0)

no simple answer possible - hfavandepas 05:10:49 08/26/11 (6)

RE: no simple answer possible - phofman 05:32:27 08/26/11 (5)

also check the other end of the S/Pdif connection - hfavandepas 05:47:24 08/26/11 (4)

RE: also check the other end of the S/Pdif connection - phofman 06:06:15 08/26/11 (3)

I agree. It is the job of the DAC manufacturer. - hfavandepas 08:38:17 08/26/11 (1)

RE: I agree. It is the job of the DAC manufacturer. - phofman 11:26:00 08/26/11 (0)

RE: also check the other end of the S/Pdif connection - audiofanatic 06:25:56 08/26/11 (0)

RE: Juli@ and grounding - phofman 08:32:02 08/24/11 (0)

Follow Ups

RE: Juli@ Digital output goes through an isolating transformer! - GStew 22:03:58 09/05/11 (0)

RE: Juli@ Digital output goes through an isolating transformer!

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