With the S9 Pro I found that things could come across as rather bright and harsh, although very detailed. In the case of the S9 Pro Plus Martha, the sound seems to not present these characteristics. It is not a warm sound, it is still very neutral, but it is not overly analytical like I found the S9 Pro to be.
I have been using it to power quite a few IEMs, from budget offerings such as the Salnotes Zero, up to high end models such as the Aroma FEI WAN, and it has done a good job of driving all of them. I didn’t find that it caused anything in particular to stand out in comparison to other neutral sources that I have used, making it transparent and, well, neutral to my ears.
The S9 Pro Plus Martha has taken that presentation and smoothed it slightly, without losing the qualities that the S9 Pro was known for. Yes, the DAC chip stays the same but that is not necessarily a bad thing. As I have said before, it is more about the implementation than the chip itself, the newest isn’t necessarily the best.
BUY NOW: Hidizs S9 Pro Plus Martha
To view the full video, please click here.