Recently, as the semester is coming to an end, I am very busy. In any case, the measurement should continue.
I received a device to be measured from a friend. It was a pure analog device from Audio-GD, my impressive manufacturer.
Someone said before that the DAC of Audio-GD I measured cannot represent the technical level of Audio-GD. Because Audio-GD is undoubtedly better at analog circuits than digital circuits.
Well, here comes the pure analog device.
Let's see how it performs!
The appearance is not good, and what I hate most is the choice of screws-these screws show the quality of this product on one side. You need to know that the use of more "decent" screws does not need to increase the cost-but can improve the appearance of the device.
But I have to say that although the buttons are ugly, the feel of pressing is better than the buttons of Holo Audio.
You can switch the working mode of Preamp and Headphone Amp by pressing keys. The same goes for volume and gain and input.
There are several special interfaces for Audio-GD on the back, but unfortunately I decided to use balanced wiring for measurement.
Okay, the nonsense ends, and the measurement starts:
Measure the Preamp part first:
Since the maximum output is less than 4V when the low gain 4V input is used, the 4V input and 4V output under the high gain are measured again (volume setting 48 MAX = 79).
DR@Low Gain(Full Vol)
DR@High Gain(Full Vol)
IMDSMP:
Multitone:
For Preamp, the most important feature is the volume control. Let's take a look at the volume control of this device:
The above volume / SINAD chart shows a very interesting feature: as the volume increases, SINAD remains unchanged for a long area ...
I carefully studied how this happens: as the volume increases, the noise floor also rises synchronously ... it's an indescribable feature ... :
Although Preamp's measurement results have been bad, in fact this is nothing!
Please stabilize your butt and see the next headphone amplifier section measurement:
To sum up:
The Audio-GD products I've measured so far are unquestionably crap. Whether it is a product containing digital circuits or a pure analog circuit product.
I received a device to be measured from a friend. It was a pure analog device from Audio-GD, my impressive manufacturer.
Someone said before that the DAC of Audio-GD I measured cannot represent the technical level of Audio-GD. Because Audio-GD is undoubtedly better at analog circuits than digital circuits.
Well, here comes the pure analog device.
Let's see how it performs!
The appearance is not good, and what I hate most is the choice of screws-these screws show the quality of this product on one side. You need to know that the use of more "decent" screws does not need to increase the cost-but can improve the appearance of the device.
But I have to say that although the buttons are ugly, the feel of pressing is better than the buttons of Holo Audio.
You can switch the working mode of Preamp and Headphone Amp by pressing keys. The same goes for volume and gain and input.
There are several special interfaces for Audio-GD on the back, but unfortunately I decided to use balanced wiring for measurement.
Okay, the nonsense ends, and the measurement starts:
Measure the Preamp part first:
Since the maximum output is less than 4V when the low gain 4V input is used, the 4V input and 4V output under the high gain are measured again (volume setting 48 MAX = 79).
DR@Low Gain(Full Vol)
DR@High Gain(Full Vol)
IMDSMP:
Multitone:
For Preamp, the most important feature is the volume control. Let's take a look at the volume control of this device:
The above volume / SINAD chart shows a very interesting feature: as the volume increases, SINAD remains unchanged for a long area ...
I carefully studied how this happens: as the volume increases, the noise floor also rises synchronously ... it's an indescribable feature ... :
Although Preamp's measurement results have been bad, in fact this is nothing!
Please stabilize your butt and see the next headphone amplifier section measurement:
To sum up:
The Audio-GD products I've measured so far are unquestionably crap. Whether it is a product containing digital circuits or a pure analog circuit product.