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Old 3rd February 2015, 06:40 PM   #1
vulejov is offline vulejov  Serbia
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Default SMSL M8 DAC

Does anyone have more information about this product.. inside pictures and some sort of schematic..

http://www.amazon.com/SMSL-ES9018-Op.../dp/B00SIERMW4

SMSL M8 DAC ES9018 Optic Coaxial Xmos USB Asynchronous 384kHz 24bit DSD64 128 | eBay
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Old 4th February 2015, 07:31 AM   #2
vulejov is offline vulejov  Serbia
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Here are some..
Attached Images
File Type: jpg SMSL M8 1.jpg (168.0 KB, 738 views)
File Type: jpg SMSL M8 2.jpg (136.6 KB, 701 views)
File Type: jpg SMSL M8 3.jpg (130.2 KB, 682 views)
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Old 5th February 2015, 09:27 AM   #3
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I also had a look at it.

People over at AudioAsylum were quite pleased with the performance of that
$250 DAC.

To me the major NoGo was that it turns off automatically after a while (afaik 5 minutes being without signal). It then requires manual interaction to get it back on.
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Old 5th February 2015, 10:41 AM   #4
vulejov is offline vulejov  Serbia
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Quote:
Originally Posted by soundcheck View Post
To me the major NoGo was that it turns off automatically after a while..
For me major NoGo will be analog output..
DIYINHK's XMOS_ES9018 combo seems wiser investment..
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Old 11th February 2015, 08:27 AM   #5
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I received it yesterday.

Well, the sound is very good. I had used x-fi elite pro before..(upgraded).

Of course I opened the box, almost all components is SMD. Very nice and carefully made. I think need some time to warm it. In plans, I think to change the external PSU unit and maybe op-amps. Regarding op-amps what they used, no marking on it, so I can't recognize exactly.
One issue is automatic power off after 10 minutes if no input signal. Hopefully they will change that option in the next driver release.
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Old 8th June 2015, 01:44 PM   #6
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Default auto turn off

hi..

press the on button for a few seconds...
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Old 25th June 2015, 05:29 PM   #7
c3474 is offline c3474  United States
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Quote:
Originally Posted by vulejov View Post
Here are some..
vulejov - can you read the label on the three 8 pin opamps in that first pic?
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Old 8th February 2016, 11:41 PM   #8
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Just about to buy one of these too.

Quoting from the data sheet:
DAC:
The M8 use the ES9018K2M as DAC, the ES9018K2M is the newest DAC of ESS technology.
The ES9018K2M SABRE32 Reference DAC is a high-performance 32-bit, 2-channel audio D/A converter, Using the critically acclaimed ESS patented 32-bit Hyperstream DAC architecture and Time Domain Jitter Eliminator.

USB:
The M8 use the most advanced USB receiver solution : the XMOS U8 solution.
This USB use a 500mips x-core chip to decode the USB audio, And it can support PCM up to 32bit/384kHz and DSD up to 5.6MHz sampling frequency. So this is the Spec of M8 in USB input.
And the XMOS is also asynchronous USB transfer, so the accuracy of the USB just depend on how good oscillator you use, and we use two very low phase noise oscillators, one is 22.5792MHz for 44.1k, 88.2k, 176.4k, 352.8k and the other one is 24.576MHz for 48k, 96k, 192k, 384k.

FILTER:
The M8 use a low noise 2-pole dual differential active filter to filter out the out-band noise , and also has 7 kind of digital filter to remove the digital noise. 3 for PCM and 4 for DSD, and user can select which to be used, and different filter makes different sound.

CLOCK:
The M8 use a low noise 2-pole dual differential active filter to filter out the out-band noise , and also has 7 kind of digital filter to remove the digital noise. 3 for PCM and 4 for DSD, and user can select which to be used, and different filter makes different sound.

POWER:
The M8 use total 10 ways LDO to supply the power. Each oscillator use a single LDO. And for ES9018K2M, we use 2 Ultra low noise LDO ADP150, which output noise just 9 μVrms. So making the M8 achieved 0.0004% in THD+N.
We also use a very good quality AC adapter to supply the 9V power to M8.
And if the user wants to Upgrade the sound quality, we also have a very good linear power supply -- P1, user can buy this and the P1 is just design for M8, so they will work together very well.

Click the image to open in full size.

and pic of the optional power supply:
Click the image to open in full size.
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Old 8th February 2016, 11:49 PM   #9
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Quote:
Originally Posted by c3474 View Post
vulejov - can you read the label on the three 8 pin opamps in that first pic?
TI OPA
1612A
46EJR

link to photo detail
https://www.evernote.com/shard/s297/...90f09a3fa129f9

Hope that helps

Last edited by rootscript; 9th February 2016 at 12:13 AM. Reason: better link to photo
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Old 13th February 2016, 03:25 PM   #10
pos is offline pos  Europe
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It is currently at $150 on massdrop.
How do you think it compares to the (not yet available) hifime 9018mk2+9601 combo?
Hifime SPDIF Optical 9018 DAC

Last edited by pos; 13th February 2016 at 03:49 PM.
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