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Interesting DAC based on Sabre ES9038PRO
Interesting DAC based on Sabre ES9038PRO
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Old 10th September 2017, 01:32 PM   #11
pos is offline pos  Europe
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Quote:
Originally Posted by ttan98 View Post
No popping noise when switching on and off, and it works fine
ttan98, can you please confirm that this kit (or these kits really, as the ES9038 kit is probably in the same boat) has some sort of delay on turn on, and maybe a relay click on both turn on and off, to make sure no transient goes to the output? No noise *at all*?
The reason I ask with such insistence is because I plan on using them with high gain and digital volume control (probably at the source, not in the DAC), so even the slightest pop can become a problem, especially with compression drivers in an active setup.

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Old 12th September 2017, 11:30 PM   #12
ttan98 is offline ttan98  Australia
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There is no relay at the output of the DAC. My standard practice of powering OFF my HI-FI system, normally I switch the amplifier ON/OFF's switch that powered my Speakers first before the DAC ON/OFF switch, it is safer this way.
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Old 13th September 2017, 10:40 AM   #13
pos is offline pos  Europe
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Thank you.
So you did not get to hear if the DAC does on/off noises or not?
No relay is fine by me as long as no noise comes out of the DAC at all, in any condition.
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Old 13th September 2017, 04:27 PM   #14
ttan98 is offline ttan98  Australia
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Haven't tested switch dac on/off switch before amplifier's so I don't know, it's possible there is a pop to the speakers on power off.
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Old 14th September 2017, 08:18 AM   #15
pos is offline pos  Europe
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I guess I will have to wait for a finished product with all the protections.
For now I have a pair of SMSL M8 that are very well behaved (no pop at all, nice menu layout, etc.) and sound good (very low noise floor), but have unbalanced outputs and an OLED screen that is always on...

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Old 15th September 2017, 08:20 AM   #16
Dimdim is offline Dimdim  Greece
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Interesting DAC based on Sabre ES9038PRO
With these low cost chinese DACs you pretty much get what you pay for: an original ES9038Pro chip (most likely.. you can actually confirm that if you hook up an Arduino to it and read a specific register), a rather sloppy design (I can't really imagine someone taking his time, going through several iterations and revisions so as to properly design such a DAC), low-end (by any standards) power supplies, low-end (by any standards) analog stages, low quality parts (if even original), and poor workmanship.

However, I can't really know if at this price point you could get a better sounding DAC since the 9028/9038 are pretty amazing sounding chips.
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Old 16th September 2017, 12:09 PM   #17
carlmart is offline carlmart  Brazil
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Don't have an Arduino, not planning to get one. Why should I?

This is a legitimate question. What audio benefits would I have for following the Arduino path?
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Old 16th September 2017, 11:46 PM   #18
Dimdim is offline Dimdim  Greece
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Interesting DAC based on Sabre ES9038PRO
It really depends on what your existing controller is already capable of doing.

For starters you get to choose the filter that sounds best to you. You also choose the best possible DPLL bandwidth to match your source.

But if you don't have a controller at all, you should definitely put in an Arduino.
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Old 17th September 2017, 01:21 AM   #19
carlmart is offline carlmart  Brazil
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What I have is a DAC board kit, with an AKM AK4396 DAC chip.

It has a coaxial input that's already provided and an I2S input, that I should arrange to select between the coaxial and an USB input, which I want to provide for.

Going the Arduino path would mean going altogether a different path.

One idea had been to use a DSD board, like a Springxer or DIYHINK, using the I2S interface, using relays, hoping the two boards (DSD and my DAC) can interface fine. My DAC goes up to 192KHz, which is one limitation.

I also need a way to know what I'm switching (bit rate, sampling) on a screen or LED panel.
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Old 17th September 2017, 11:54 AM   #20
Dimdim is offline Dimdim  Greece
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Interesting DAC based on Sabre ES9038PRO
The AK dacs are totally different beasts compared to the ESS dacs.

You should probably start a new thread about your AK4396 DAC.
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