It has been a long time since the last time I published the measurement report.
There are many reasons for the disappearance of this period. At the beginning, it was caused by the epidemic and the Chinese New Year. It is difficult for me to receive new equipment for measurement.Everyone knows that the development and production of new equipment has also been affected a lot.
As the impact of the epidemic in China disappears, my family is preparing for the birth of a new baby ... In order to prepare for this, I am busy renovating one of my garages-using it as my measurement studio-this work is not yet complete carry out.
In fact, I have received some equipment since April, but they are all prototypes. In addition to Topping A90, there are areas where I have feedback and the manufacturer said that it will make improvements before the official sale. ----- Again I emphasize that this feedback is free.
Debugging of prototypes and pre-production equipment is my pleasure. After the product fixes the related bugs, it will go on the market again-let the fans get a more complete product. This process will make me very happy.
SMSL M400 is one of the devices that has been improved and sent to me in the official retail version.
Okay, go for it!
In terms of interface, apart from the texture of the connector, there are not many complaints (I wanted to say that AES is missing, but I know there is really no place )
I'm still not satisfied with industrial design and workmanship. One of the simplest improvements: the interface fixing screw on the back should be black! The surface treatment of aluminum alloy, the acrylic on the upper surface, the texture and feel of the front knob ... There are too many places to discuss and improve.
Measurements:
Since the output level is relatively high, I lowered the volume to 75 (80Max) to obtain the measurement result (XLR) at 4V level:
But what actually impressed me more is the result of RCA:
There are many reasons for the disappearance of this period. At the beginning, it was caused by the epidemic and the Chinese New Year. It is difficult for me to receive new equipment for measurement.Everyone knows that the development and production of new equipment has also been affected a lot.
As the impact of the epidemic in China disappears, my family is preparing for the birth of a new baby ... In order to prepare for this, I am busy renovating one of my garages-using it as my measurement studio-this work is not yet complete carry out.
In fact, I have received some equipment since April, but they are all prototypes. In addition to Topping A90, there are areas where I have feedback and the manufacturer said that it will make improvements before the official sale. ----- Again I emphasize that this feedback is free.
Debugging of prototypes and pre-production equipment is my pleasure. After the product fixes the related bugs, it will go on the market again-let the fans get a more complete product. This process will make me very happy.
SMSL M400 is one of the devices that has been improved and sent to me in the official retail version.
Okay, go for it!
In terms of interface, apart from the texture of the connector, there are not many complaints (I wanted to say that AES is missing, but I know there is really no place )
I'm still not satisfied with industrial design and workmanship. One of the simplest improvements: the interface fixing screw on the back should be black! The surface treatment of aluminum alloy, the acrylic on the upper surface, the texture and feel of the front knob ... There are too many places to discuss and improve.
Measurements:
Since the output level is relatively high, I lowered the volume to 75 (80Max) to obtain the measurement result (XLR) at 4V level:
But what actually impressed me more is the result of RCA:
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Thank you 
