This is a review of the Sabaj D4 DAC and headphone amplifier. It is on kind loan from a member. I see it being sold as low as $88.
The box is rather odd looking as you see. The touch buttons are not the most sensitive. And the display is as tiny as you can get. But usable. Here is the rear panel:
Nice to see built-in power supply in such low cost unit.
Sabaj D4 DAC Measurements
Our usual dashboard shows a lot of power supply interference together with rather high distortion levels (compared to competition):
This lets the D4 barely squeeze into our "very good category:"
In addition to distortion, noise floor is also not very competitive:
This impacts IMD test:
Jitter reflects the power supply spikes:
I didn't see the need to run more tests.
Sabaj D4 Headphone Amplifier Measurements
Noise floor impacts these tests as well:
Power level is low and not competitive with products that I recommend. While it should be able to drive fair bit of headphones, it will struggle on less sensitive ones.
Conclusions
I think the original price for this unit was around $150. At that price point even, I don't think this level of performance is competitive. As noted, I am not a fan of the looks either. This year's Sabaj products perform far better. So I suggest seeking them out if you want to stay with the brand.
I can't recommend the Sabaj D4. Not that it is awful or anything but that the race has left it fair behind the competition.
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As always, questions, comments, recommendations, etc. are welcome.
Any donations are much appreciated using: https://www.audiosciencereview.com/forum/index.php?threads/how-to-support-audio-science-review.8150/
The box is rather odd looking as you see. The touch buttons are not the most sensitive. And the display is as tiny as you can get. But usable. Here is the rear panel:
Nice to see built-in power supply in such low cost unit.
Sabaj D4 DAC Measurements
Our usual dashboard shows a lot of power supply interference together with rather high distortion levels (compared to competition):
This lets the D4 barely squeeze into our "very good category:"
In addition to distortion, noise floor is also not very competitive:
This impacts IMD test:
Jitter reflects the power supply spikes:
I didn't see the need to run more tests.
Sabaj D4 Headphone Amplifier Measurements
Noise floor impacts these tests as well:
Power level is low and not competitive with products that I recommend. While it should be able to drive fair bit of headphones, it will struggle on less sensitive ones.
Conclusions
I think the original price for this unit was around $150. At that price point even, I don't think this level of performance is competitive. As noted, I am not a fan of the looks either. This year's Sabaj products perform far better. So I suggest seeking them out if you want to stay with the brand.
I can't recommend the Sabaj D4. Not that it is awful or anything but that the race has left it fair behind the competition.
-----------
As always, questions, comments, recommendations, etc. are welcome.
Any donations are much appreciated using: https://www.audiosciencereview.com/forum/index.php?threads/how-to-support-audio-science-review.8150/