In fact, this (pre-production) machine has been here for a long time, and the completion degree is very high when I get it (I gave some unimportant suggestions). Later, in order to keep improving, the manufacturer made some adjustments to the power adapter. Last week I got the final retail version of the external power adapter. The basic measurement data has not changed, but the power (current output capability of the device) at 16R has been more liberated!
In my opinion, this is a game-changing amp. Out of respect for developers and manufacturers, I have always insisted on their authorization to release the measurement results.
The manufacturer gave me the authority to release the measurement this week.
So, here comes (the measurement is incomplete, because I am too busy as a teacher at the end of the semester, and I will add the rest tomorrow evening. Forgive me)
In terms of appearance, considering the price (slightly more than 100 dollars? They didn't tell me the specific price), there are very few places that can be picky. And... For the measurement results of this device, the appearance is completely unimportant!
Measurement result:
4V Dashboard
The crazy 122SINAD! 0.00007X%THD+N!
I adjusted the level to 5V to get the best result of AP:
OK 124……
This is close to AP's Loopback (except for some interference caused by wiring?)
In this measurement, L30 is close to (except for some more noise caused by wiring etc.) the analog measurement limit of APx555!
Due to the noise floor of the AP itself, the DNR at 50mv can only be measured to around 95db. If this measurement reaches 95db, I will use a 40db low-noise amplifier to simultaneously amplify the noise floor and distortion of the device (in fact, it will deteriorate the measurement result)
Multitone:
Already close to AP's own generator... performance limitations?
The channel balance... barely makes sense... I will update the data of other units.
Crosstalk
In my opinion, this is a game-changing amp. Out of respect for developers and manufacturers, I have always insisted on their authorization to release the measurement results.
The manufacturer gave me the authority to release the measurement this week.
So, here comes (the measurement is incomplete, because I am too busy as a teacher at the end of the semester, and I will add the rest tomorrow evening. Forgive me)
In terms of appearance, considering the price (slightly more than 100 dollars? They didn't tell me the specific price), there are very few places that can be picky. And... For the measurement results of this device, the appearance is completely unimportant!
Measurement result:
4V Dashboard
The crazy 122SINAD! 0.00007X%THD+N!
I adjusted the level to 5V to get the best result of AP:
OK 124……
This is close to AP's Loopback (except for some interference caused by wiring?)
In this measurement, L30 is close to (except for some more noise caused by wiring etc.) the analog measurement limit of APx555!
Due to the noise floor of the AP itself, the DNR at 50mv can only be measured to around 95db. If this measurement reaches 95db, I will use a 40db low-noise amplifier to simultaneously amplify the noise floor and distortion of the device (in fact, it will deteriorate the measurement result)
Multitone:
Already close to AP's own generator... performance limitations?
The channel balance... barely makes sense... I will update the data of other units.
Crosstalk
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