The first thing that struck me about the MS5 was how big their bass was, their size, their presence and their impact on the sound. It is clear that I like bass, that I look for it and miss it when it is not there. But I am surprised that IEMS of this price (for a reviewer unaccustomed to analysing IEMS of this level, it is a relatively high price) have a tuning with a predominance in the low end. The bass is big, quite deep, has a certain viscerality, power and punch. It also takes up space, is physical and brings a lot of volume to the stage. It has a dark colour, which gives it a double sense of depth and sensitivity. And so it shows in the punch, the kick drums move a lot of air and in the eardrums it picks up that punch that is able to get down to a physical and sensory point. In that respect, the MS5 shows rage and that visceral ability I'm talking about. But it is also skillful, technical, tight and quite fast, both in its development and in its decay. It's true that a bass of this size does leave a aftertaste, but don't look for it as if it were a mass that has no beginning, no end. The MS5s are much more competent than all that. Able to discern between dangerous bass drums and sub-bass lines with great definition, able to differentiate bass layers and stratify them with astuteness.
The Hidizs MS5 are the brand's flagship IEMS. Without a doubt, this is a daring project, in which Hidizs has put a lot of effort into its design, construction and sound, as well as its promotion. There is no doubt about that. But, in the end, it is the public that passes judgement.
Finally, the price/performance ratio. The Hidizs MS5 has a starting price of $499. But they are currently available for $379, which means that the price/performance ratio is very high. As soon as the model returns to its retail price, the battle will be much tougher and the ratio will undoubtedly be lower.