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A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
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Old 18th November 2017, 07:16 PM   #6401
LuisMCP is offline LuisMCP  Spain
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Default Stopped Clock Operation with PCM1794

I'm wondering if it is possible to apply Stopped-Clock-Operation to PCM1794 in NOS mode.
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Old 1st December 2017, 07:47 PM   #6402
cHoc is offline cHoc  Netherlands
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Is this transformer also one that can be used as a substitute for the Cinemag or the Sowter?
And would it fare well against those?

Click the image to open in full size.
AIT1 from Audience, the makers of the Auricaps.
http://audience-av.com/wp-content/up...16/09/AIT1.pdf
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Old 1st December 2017, 07:57 PM   #6403
zigzagflux is offline zigzagflux  United States
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Looks like a blatant copy of the Cinemag, datasheet and all.
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Old 2nd December 2017, 11:41 AM   #6404
Bfpca is offline Bfpca  Canada
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A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
It is not a clone of the Cinemag 15k input transformer. Note that it is a 600:600 ohm isolation transformer. It looks like it may be manufactured by Cinemag but they state it uses special wire, so I would guess it’s a OEM adaptation of a Cinemag design, manufactured by Cinemag exclusively for Audience.
Not sure it would work well unless you had a lot of boards to drive it. The input impedance is specified at less than 600ohms which will require some current to drive if terminated properly with 600ohms on the secondary.
Also no voltage gain that you would get with the Sowther.
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Old 4th December 2017, 06:12 PM   #6405
cHoc is offline cHoc  Netherlands
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Quote:
Originally Posted by Bfpca View Post
It is not a clone of the Cinemag 15k input transformer. Note that it is a 600:600 ohm isolation transformer. It looks like it may be manufactured by Cinemag but they state it uses special wire, so I would guess itís a OEM adaptation of a Cinemag design, manufactured by Cinemag exclusively for Audience.
Not sure it would work well unless you had a lot of boards to drive it. The input impedance is specified at less than 600ohms which will require some current to drive if terminated properly with 600ohms on the secondary.
Also no voltage gain that you would get with the Sowther.
Ok, not the ideal transformer, specially to start with....
Voltage gain was not an requirement for me, I was just looking if it would be a worthy transformer next to the other two in terms of (sound)quality.
I forgo on the inpedance difference between the two, I did not take that into account, thnx for pointing that out.
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Old 3rd January 2018, 10:31 AM   #6406
dddac is offline dddac  Germany
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A NOS 192/24 DAC with the PCM1794 (and WaveIO USB input)
Wishing every one a great 2018. Hope we all find time for our hobby and having some creative ideas for the DIY :-)
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Old 9th January 2018, 02:56 PM   #6407
stefan646 is online now stefan646
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Wishing every one a great 2018. Hope we all find time for our hobby and having some creative ideas for the DIY :-)
Happy new year !
I have a question regarding the signal input resistors (R1). There are there for line impedance matching? The Hermes - Cronus are having 33ohm resistors in the signals paths , so I am guessing it will be a good thing to change all the DAC boards R1 to 33ohm as well?
EDIT: with the Hermes Cronus connected directly to the DAC, without the main board

Last edited by stefan646; 9th January 2018 at 02:59 PM.
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Old 9th January 2018, 06:20 PM   #6408
eduard is offline eduard  Netherlands
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Hello,
Happy new year to all dddac users who did share their precious information.
Next step will be to try berry streamer to compare it to the Aurender.
If playing files from a hardddisk in possible with the berry streamer.
Maybe open a new thread about it in a few weeks.
Greetings, Eduard
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Old 9th January 2018, 06:21 PM   #6409
eduard is offline eduard  Netherlands
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Hello,
Happy new year to all dddac users who did share their precious information.
Next step will be to try berry streamer to compare it to the Aurender.
If playing files from a hardddisk in possible with the berry streamer.
Maybe open a new thread about it in a few weeks.
Greetings, Eduard
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Old 9th January 2018, 09:19 PM   #6410
mbrennwa is offline mbrennwa  Switzerland
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Quote:
Originally Posted by eduard View Post
Next step will be to try berry streamer to compare it to the Aurender.
If playing files from a hardddisk in possible with the berry streamer.
I am running one of my DDDACs using the I2S output of an RPI+HifiBerry DAC+ Pro. The RPI runs Volumio. Playing from harddisk is no problem, and it also plays music via network (NAS / disk shares, AirPlay, etc.). Volumio also controls a stepped volume control (Allo Relay Attenuator). This whole setup works very well. Operation is super convenient and it sounds very, very good.
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