• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required as is 20 years of participation in forums (not all true). Come here to have fun, be ready to be teased and not take online life too seriously. We now measure and review equipment for free! Click here for details.

Review and Measurements of Schiit Modi 3 DAC

amirm

Founder/Admin
Staff Member
CFO (Chief Fun Officer)
Joined
Feb 13, 2016
Messages
22,598
Likes
34,799
Location
Seattle Area
#21
Amir, could you please test DNR like you did in the apple pie and katana measurements?
Sure.

Here is USB:

Schiit Modi 3 DAC USB Dynamic Range Measurement.png


And S/PDIF:
Schiit Modi 3 DAC SPDIF Dynamic Range Measurement.png
 

amirm

Founder/Admin
Staff Member
CFO (Chief Fun Officer)
Joined
Feb 13, 2016
Messages
22,598
Likes
34,799
Location
Seattle Area
#26
Switched form my desktop to laptop for USB measurements and the results are the same:
Schiit Modi 3 DAC Jitter laptop Measurement.png


So the source of 100 Hz square wave is internal to the DAC USB implementation. Using decrapifiers, etc. would not help then.

I am still at a loss how Schiit didn't get this in their measurements.
 

flipflop

Senior Member
Joined
Feb 22, 2018
Messages
433
Likes
405
#27
I think you're confused between Amir's +-0.1 dB linearity criterion with freq response. :facepalm:
I'm not. Even dirt cheap DACs like the Speaka measure better than this.
I think you just have low standards :facepalm:
 

amirm

Founder/Admin
Staff Member
CFO (Chief Fun Officer)
Joined
Feb 13, 2016
Messages
22,598
Likes
34,799
Location
Seattle Area
#29
Major progress on USB issue.

I fed it a -90 dB signal and it reproduced stepped response which meant it was converting 24 bit samples to 16 bits! Worrying this was caused by the ASIO4ALL wrapper I am using, I tried it in Roon. At first, saw the same problem but all of a sudden, it snapped to 24 bit and it is staying there!

1538163787088.png


Going back to using ASIO4ALL, I see the problem again.

This is a rare incompatibility with ASIO4ALL. I still can't figure out how Schiit didn't see it unless they have an internal ASIO driver they don't release.
 

bunkbail

Active Member
Patreon Donor
Joined
Feb 27, 2018
Messages
296
Likes
299
#31
Major progress on USB issue.

I fed it a -90 dB signal and it reproduced stepped response which meant it was converting 24 bit samples to 16 bits! Worrying this was caused by the ASIO4ALL wrapper I am using, I tried it in Roon. At first, saw the same problem but all of a sudden, it snapped to 24 bit and it is staying there!

View attachment 15989

Going back to using ASIO4ALL, I see the problem again.

This is a rare incompatibility with ASIO4ALL. I still can't figure out how Schiit didn't see it unless they have an internal ASIO driver they don't release.
I'm impressed that it actually beats Topping D50 in SINAD by 1 dB.
 

gvl

Major Contributor
Joined
Mar 16, 2018
Messages
1,422
Likes
1,033
Location
SoCal
#32
This is a rare incompatibility with ASIO4ALL. I still can't figure out how Schiit didn't see it unless they have an internal ASIO driver they don't release.
Did you try installing their drivers? If memory serves (which it may well not) Modi Multibit drivers were a PITA to install but included an ASIO driver.
 

amirm

Founder/Admin
Staff Member
CFO (Chief Fun Officer)
Joined
Feb 13, 2016
Messages
22,598
Likes
34,799
Location
Seattle Area
#33
Did you try installing their drivers? If memory serves (which it may well not) Modi Multibit drivers were a PITA to install but included an ASIO driver.
They have deprecated them. Last time I tried it would not install on my machine or it installed but didn't work. I looked when I found the issue and there are no modi 3 drivers.
 

gvl

Major Contributor
Joined
Mar 16, 2018
Messages
1,422
Likes
1,033
Location
SoCal
#34
They have deprecated them. Last time I tried it would not install on my machine or it installed but didn't work. I looked when I found the issue and there are no modi 3 drivers.
Are Modi 2/3 using the same CMEDIA chipset? If so older drivers may just work.
 

gvl

Major Contributor
Joined
Mar 16, 2018
Messages
1,422
Likes
1,033
Location
SoCal
#35
If I'm reading it right, the wallwart isn't needed for USB only operation. Question, do SPDIF inputs still work with only a USB to computer connection (no wallwart)?
 

amirm

Founder/Admin
Staff Member
CFO (Chief Fun Officer)
Joined
Feb 13, 2016
Messages
22,598
Likes
34,799
Location
Seattle Area
#36
If I'm reading it right, the wallwart isn't needed for USB only operation. Question, do SPDIF inputs still work with only a USB to computer connection (no wallwart)?
That is what they say although I did have it plugged in during USB testing:

1538166699705.png
 

amirm

Founder/Admin
Staff Member
CFO (Chief Fun Officer)
Joined
Feb 13, 2016
Messages
22,598
Likes
34,799
Location
Seattle Area
#37
Are Modi 2/3 using the same CMEDIA chipset? If so older drivers may just work.
They do use CMEDIA:

1538166851596.png


As I said, I formerly tried to install them with no success in getting an ASIO interface out of them.
 

gvl

Major Contributor
Joined
Mar 16, 2018
Messages
1,422
Likes
1,033
Location
SoCal
#38
That is what they say although I did have it plugged in during USB testing:

View attachment 15991
Gotcha and thanks. Sounds like their Wyrd may make sense for Modi 3 given it is a linear PSU and a sort of USB cleaner. Not that you should buy one, but if you have one laying around (for some strange reason I have 2!) it may have been waiting for this moment.

All in all this is great news, I no longer have to send my money to China to get a sub-$100 well measuring DAC with all sorts of inputs. Mr. Trump can retire now.
 

gvl

Major Contributor
Joined
Mar 16, 2018
Messages
1,422
Likes
1,033
Location
SoCal
#39
They do use CMEDIA:

View attachment 15992

As I said, I formerly tried to install them with no success in getting an ASIO interface out of them.
This is a bit disconcerting btw. What about Windows 7 users? Or you mean the driver works but no ASIO?

And again, if my memory isn't playing tricks on me, the ASIO interface had some weird name, I could have never guessed it was for CMEDIA/Modi.
 
Last edited:

amirm

Founder/Admin
Staff Member
CFO (Chief Fun Officer)
Joined
Feb 13, 2016
Messages
22,598
Likes
34,799
Location
Seattle Area
#40
This is a bit disconcerting btw. What about Windows 7 users? Or you mean the driver works but no ASIO?
No Asio. My analyzer only understands ASIO. That is how Schiit tested it too.
 

Similar threads

Top Bottom