This is a review and detailed measurements of the new revision of the Loxjie D30 stereo DAC and headphone amplifier. It was sent to me by the company and costs US $260 on Amazon including Prime shipping.
The main stand-out feature as far as looks is the better home screen graphics than sister company (SMSL):
The menus otherwise look like SMSL DACs. I don't like how the audio format and sample rate are emphasized in big letters as opposed to the volume control. Speaking of that, it is linear so while good for small adjustments, it takes forever to go from low to high volume. They should implement acceleration for it and show the level in large letters in the middle.
The back side is as you expect except the nice bonus of built-in power supply despite the small size:
Loxjie D30 Measurements
As usual we start with our dashboard:
Wow, this is quite good! Distortion is vanishingly low and noise level low enough to land the D30 in our top 20 best DACs ever measured:
Here is the noise performance by itself:
Considering that is unbalanced only, these are indeed quite good numbers.
IMD test shows the slight hint of distortion increase which is typical of good implementations of ESS DACs:
I was a bit surprised to see more spurious tones in jitter test of USB versus Coax as it is usually the other way around:
Linearity is absolutely perfect:
Only three filters are provided which is fine (caption should say Loxjie D30):
The default is the Fast Linear which is what I used for the THD+N vs frequency:
Multitone once again shows off the extremely low distortion:
Headphone Amplifier Measurements
Let's jump right into available power:
Ah, this is substantially lower power than what we see in this class of product. Noise level is also higher than one would expect:
It is not terrible by any stretch but no match for the superb DAC inside.
I did some quick listening with my Sennheiser HD650. There is enough power to drive them for everyday use such as office and such.
Conclusions
It is clear that the Loxjie D30 has benefited from tight loop of measure and refine to produce a DAC with top notch performance. I like the built-in power supply to reduce desk clutter. As I noted, I wish for some improvement in user interface. Headphone amplifier has very clean output but not a lot of drive so best to use it with efficient headphones.
I am going to recommend the Loxjie D30.
------------
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 main stand-out feature as far as looks is the better home screen graphics than sister company (SMSL):
The menus otherwise look like SMSL DACs. I don't like how the audio format and sample rate are emphasized in big letters as opposed to the volume control. Speaking of that, it is linear so while good for small adjustments, it takes forever to go from low to high volume. They should implement acceleration for it and show the level in large letters in the middle.
The back side is as you expect except the nice bonus of built-in power supply despite the small size:
Loxjie D30 Measurements
As usual we start with our dashboard:
Wow, this is quite good! Distortion is vanishingly low and noise level low enough to land the D30 in our top 20 best DACs ever measured:
Here is the noise performance by itself:
Considering that is unbalanced only, these are indeed quite good numbers.
IMD test shows the slight hint of distortion increase which is typical of good implementations of ESS DACs:
I was a bit surprised to see more spurious tones in jitter test of USB versus Coax as it is usually the other way around:
Linearity is absolutely perfect:
Only three filters are provided which is fine (caption should say Loxjie D30):
The default is the Fast Linear which is what I used for the THD+N vs frequency:
Multitone once again shows off the extremely low distortion:
Headphone Amplifier Measurements
Let's jump right into available power:
Ah, this is substantially lower power than what we see in this class of product. Noise level is also higher than one would expect:
It is not terrible by any stretch but no match for the superb DAC inside.
I did some quick listening with my Sennheiser HD650. There is enough power to drive them for everyday use such as office and such.
Conclusions
It is clear that the Loxjie D30 has benefited from tight loop of measure and refine to produce a DAC with top notch performance. I like the built-in power supply to reduce desk clutter. As I noted, I wish for some improvement in user interface. Headphone amplifier has very clean output but not a lot of drive so best to use it with efficient headphones.
I am going to recommend the Loxjie D30.
------------
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/
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