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Review and Measurements of the Leaf Audio DSD1796DAC

WolfX-700

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#1
Last Wednesday, forum member @Zek asked me if I could measure Leaf Audio DSD1796 DAC.Because he was very curious about the DSD1796 chip.

This is a cheap unit. So for this friend's curiosity ... I bought one.

Photo.jpg


Helping others is also redeeming yourself.


Here is the time for the 555 and Leaf DSD1796 joint show

Designer claims THD + N is 0.008%
Dashboard.jpg



-20dbFS

This is much better, so I suspect the problem comes from a USB-powered design with a single 5V power supply

D.jpg



D-R
Dynamic-Range---AES17.jpg


Linearity-(-20.jpg


THD-Ratio
THD+N-Ratio-vs-Measured-Level.jpg


THD+N Ratio.jpg



IMD-SMP
SMPTE-Ratio.jpg


Multitone.jpg



And Headphone Amplifier:

I use a 50R resistor as the load

Power.jpg



This is a simple review and measurement.
Overall, I think the performance of this unit is average.
But taking into account (I bought) the price and features. I think C / P is high.
 
Last edited:

Zek

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#7
I tried to explore what the difference was - replacing some capacitors and op-amps I think.
 
OP
WolfX-700

WolfX-700

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Thread Starter #8
I tried to explore what the difference was - replacing some capacitors and op-amps I think.
I asked the developer, tweaked one just changed OPAMP from 4580D to 49720NA
 

JohnYang1997

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#9
emmm. The performance is pretty bad regardless of price. Is it better than apple dongle? And meizu dongle?
 

Zek

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#10
I asked the developer, tweaked one just changed OPAMP from 4580D to 49720NA
I compared the inside images of Leaf Audio and Douk Audio and found differences in 12 capacitors and 3 op-amps.
You measured Douk Audio and not Leaf Audio - is there any difference between the two.
Douk Audio.jpg Leaf Audio.jpg
 
Last edited:
OP
WolfX-700

WolfX-700

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Thread Starter #12
I compared the inside images of Leaf Audio and Douk Audio and found differences in 12 capacitors and 3 op-amps.
You measured Douk Audio and not Leaf Audio - is there any difference between the two.
View attachment 41041 View attachment 41042
Aha, you pay great attention to details

However, this is only the difference between production batches ...

leaf.jpg
 

bunkbail

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#13
emmm. The performance is pretty bad regardless of price. Is it better than apple dongle? And meizu dongle?
Depends on the power of the headphone out, I guess.
 
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