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Old 20th February 2013, 09:20 AM   #251
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Default DIY es9023

I made this. Look bad but sound very good ! There is seperate 2 ground planes for dgnd and agnd. It use TL1963 3.3V regulator. Input to regulator through RC = 7R x 2200uF Rubycon YXG +100nF. Output 470uF BC038 + 100nF. R8 = 143K RN55 parallel to 10uF Panasonic AM-X +100nF. Neg use 22uF Nichicon FW + 100nF. CN_CP use 1uF X7R + 100nF. Mute use 100K + 5uF.No series R on analogue. Only have 4700pF Multicap PPMFX (metal polypropylene) output to agnd. Tenor use 12Mhz XO91 <1ps rms jitter. Input to Tenor through capacitance multiplier.

Sound is very good. No clipping/distortion. Very very small pop noise when plug into USB. I use Foobar, kernel streming, no driver. There is low jitter sound quality so this is very good value part.
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File Type: jpg ES9023.JPG (546.0 KB, 784 views)

Last edited by Nanoloop; 20th February 2013 at 09:43 AM.
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Old 21st February 2013, 01:44 AM   #252
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I did some listening tests for other DACs and this. This DAC has very good vocals, and deep bass and high treble detail is good. Stereo is good but not big. All together, it does not sound better than WM8741, and sound different but not better than CS4398. But maybe it is no-pcb way I make it. I use star-earth for all agnd connection to agnd plane. LRCLK and Data are direct on pcb. BCLK and MCLK are very short wire but above pcb - not best way. Some 100nF are smd on pins - CN_CP is smd ceramic on pins, NEG is smd ceramic on pins. Other 100nF are big with wires. It is good value DAC IC but not giant killer. I can recommend it.
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Old 22nd February 2013, 02:15 AM   #253
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Default DIY es9023

Quote:
Originally Posted by Nanoloop View Post
I made this. Look bad but sound very good !
I give up, where did you hide the DAC?

Attached are pix of my modded UAE23 I may redo parts of it, but it works well.
The top 50Mhz Oscillator I would like a better cap arrangement and maybe a ferrite bead.
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File Type: jpg uae23rearwith2resand12osc100k.jpg (309.2 KB, 690 views)
File Type: jpg uae23front50.jpg (328.7 KB, 656 views)
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Old 22nd February 2013, 03:04 PM   #254
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Quote:
Originally Posted by Nanoloop View Post
I did some listening tests for other DACs and this. This DAC has very good vocals, and deep bass and high treble detail is good. Stereo is good but not big. All together, it does not sound better than WM8741, and sound different but not better than CS4398. But maybe it is no-pcb way I make it. I use star-earth for all agnd connection to agnd plane. LRCLK and Data are direct on pcb. BCLK and MCLK are very short wire but above pcb - not best way. Some 100nF are smd on pins - CN_CP is smd ceramic on pins, NEG is smd ceramic on pins. Other 100nF are big with wires. It is good value DAC IC but not giant killer. I can recommend it.
difference vs cs4398 ? (what use in the cs out ?)
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Old 22nd February 2013, 04:29 PM   #255
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Quote:
Originally Posted by enjoybiking View Post
I give up, where did you hide the DAC?

Attached are pix of my modded UAE23 I may redo parts of it, but it works well.
The top 50Mhz Oscillator I would like a better cap arrangement and maybe a ferrite bead.
DAC lives at edge of tenor pcb, and top is down, so LRCLK and Data are direct connection - pin to tenor pcb.

How is 50mhz ? better ?

CS4398 is Musiland MD10 with ad8599 op amp and good xo. Needs better power.
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Old 22nd February 2013, 04:44 PM   #256
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Default 50Mhz better?

Quote:
Originally Posted by Nanoloop View Post
DAC lives at edge of tenor pcb, and top is down, so LRCLK and Data are direct connection - pin to tenor pcb.
How is 50mhz ? better ?
CS4398 is Musiland MD10 with ad8599 op amp and good xo. Needs better power.
I like the 50Mhz Osc but what I need to DO is compare the two, the second UAE23 is at my Sister and Brother-in-law's and does NOT have the 50 OSC... I have to leave my UAE23 with them to compare. If I do more modding on these I will use a stack of 3 regulators SOT-223 {stack them, bend down the leads... fly the + outs with wirewrap wires...} it would be very neat. I think the TCXO at 12.000mHz helped, I KNOW my jump to 3.6Vdac, and 100K on pin#6 ES9023 helped. USB isolation helped {I use an OPticis m2-100-03 fiber-optic isolator, it has one sin, a switching 5V PSU at the remote end, but it seems quiet}.

I had a lesser CS4398, TE7022 combo... it was clean but this UAE23 {modded} has more soundstage, more "middle" "to me". It too had a so-so PSU arrangement. They guy I sold it to heard one of these UAE23 the other day and WANTS ONE.
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Old 23rd February 2013, 01:10 PM   #257
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I tried adum4160 usb isolater with this. It is better for mid and treble (less thd ?) but less deep for bass (more jitter ?). Less trouble without so without is my choice.

I will try 50mhz. thank you.
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Old 23rd February 2013, 06:19 PM   #258
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Default Isolation

Quote:
Originally Posted by Nanoloop View Post
I tried adum4160 usb isolater with this. It is better for mid and treble (less thd ?) but less deep for bass (more jitter ?). Less trouble without so without is my choice.
I will try 50mhz. thank you.
I am sorry isolation didn't work well for you -- I have given the fiber isolators to family members and everyone could hear the improvement [so far just on TE7022 receivers]. Beyond 24/96 USB isolation at 480 would be expensive -- progressing into that world I see I2S isolation {instead, or, not at all}. The best way I can describe USB isolation is this. I live in a city, when I go outside I hear the drone of cars on bigger roads in the distance. When I am in a remote place I hear nothing. I live in a City, I ignore the noise, but when it's GONE... nicer. I wonder if anyone here has compared UAE23 to UAE23+ and how they like the isolator in the 23+ vs not? Well, there are MANY factors there, like where power is coming from.

The mods I have done I would do better a third or fourth time, maybe place ferrite bead on the V+ clock pad{s}... It would be a waste of some good parts and precious TIME, to start over from nothing, but I might try adding beads. The second time I put in a 12.000mHz clock I moved it close to the crystal pads -- YOU are wiring the DAC parts in free air? {NOT modding a UAE23} WoW!! I have a few Es9023 on SMD to DIP boards, but that usually means I2s signals have a longer path. [and probably would not fit in your little DAC box]. I am not a headphone guy so second UAE23 ended up in a black metal chassis with gold RCA jacks. [UAE23+ was just coming out when I started this tweaking, that would have been easier, I will probably buy one to keep the fun going].
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Old 23rd February 2013, 08:57 PM   #259
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I really don't like USB isolation since you are limited to 24Bit/96kHz.

A better option is isolation of the I2S signals instead, then there is no problem at all getting higher than 24/96 from an USB connection since it is easy to get digital isolators that can handle much higher than 24/96 without a problem.

An ES9023 DAC running asynchronously with a 50.000MHz clock and isolation of the incoming BCK, LRCK, DIN signals through a digital isolator like the IL715 is an easy way to get isolation from the PC without limiting yourself to 24/96 which is what you get as a maximum with an USB isolator.

You could go a bit further and run the ES9023 synchronously. Keep the digital isolator, take the digital output from it and fed it to a AD1896 ASRC, input side as slave, output side as master with a 24.576MHz clock feeding the AD1896 as well as the ES9023. Then you will have isolation from the PC, upsampling to 96kHz and running the ES9023 Master clock synchronously with the AD1896 Master clock with the BCK, LRCK, DIN signals in perfect synch.

Last edited by Neutrality; 23rd February 2013 at 09:00 PM.
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Old 23rd February 2013, 09:16 PM   #260
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Default PCB

Quote:
Originally Posted by Neutrality View Post
I really don't like USB isolation since you are limited to 24Bit/96kHz.

A better option is isolation of the I2S signals instead, then there is no problem at all getting higher than 24/96 from an USB connection since it is easy to get digital isolators that can handle much higher than 24/96 without a problem.

An ES9023 DAC running asynchronously with a 50.000MHz clock and isolation of the incoming BCK, LRCK, DIN signals through a digital isolator like the IL715 is an easy way to get isolation from the PC without limiting yourself to 24/96 which is what you get as a maximum with an USB isolator.

You could go a bit further and run the ES9023 synchronously. Keep the digital isolator, take the digital output from it and fed it to a AD1896 ASRC, input side as slave, output side as master with a 24.576MHz clock feeding the AD1896 as well as the ES9023. Then you will have isolation from the PC, upsampling to 96kHz and running the ES9023 Master clock synchronously with the AD1896 Master clock with the BCK, LRCK, DIN signals in perfect synch.
I'd need a PCB for that from some Genius guy in Denmark; I officially suck at Eagle CAD {I just need time, maybe audit a course at the University here?}.

I was thinking sooner than that I might try a CM6631 non-A because I have it, maybe into one of YOUR boards, the world Famous Bragi

Bragi, an Asynchronous ES9023 DAC with isolated I2S Input and Alps RK27 Volume pot

I seem to be behind the times
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