7Hz has been making waves with a string of impressive releases recently. I recently reviewed the 7Hz Five, which I very much enjoy with its five dynamic driver configuration and reasonably good value for money. But if you want something even more affordable, there’s the 7Hz Aero.
Retailing at only $15 (about RM65) from Linsoul – which was kind enough to provide this review unit – the Aero is certainly a budget-friendly IEM. Of course, certain sacrifices have to be made at this price point, and I’ll get to them (along with the positive qualities of the Aero) in this review.
What It Is
The 7Hz Aero features a single 9.2mm dynamic driver, positioned as an entry-level option within the brand’s expanding lineup. The packaging is minimalist, focusing on practicality over flair. This might not necessarily be appreciated by everyone, especially since unique packaging and elaborate accessories are (more often than not) to be expected in the ChiFi hobby these days.
Included with the Aero is a thin, non-detachable cable, which is no-frills; much like the overall packaging of the IEM. Beyond that, one issue with the Aero stuck out to me; despite experimenting with various ear tips, I find that the IEM can’t quite form a full seal in my ears, resulting in sub-par isolation. I reckon this is an issue with the overall shape of the shell, though your mileage may vary given that everyone’s ear canal is unique.
How Does It Sound?
In general, the Aero has a U-shaped sound signature with noticeable emphasis on the sub-bass. While it delivers an above-average sub-bass rumble and decent mid-bass impact, the overall sound profile feels somewhat neutral and…uninspiring. This is especially noticeable if you want a more “colourful” tuning.
As for tonality, the Aero leans towards the the warmer side, but it lacks the silky smoothness that I usually prefer. The mids come across as a bit thin, which may not satisfy those who enjoy a richer, fuller mid-range. Additionally, the treble region is characterized by a roll-off that leaves it lacking in sparkle and overall clarity.
On a positive note, the Aero’s soundstage is above average for its price range, and it’s surprisingly wider than you might expect. This provides a more spacious and engaging listening experience, counterbalancing some of the limitations in other aspects of its sound profile.
Is It Worth It?
Considering the Aero’s $15 price tag, it does offer decent performance for the money. However, its non-detachable cable and minimal packaging are clear limitations (and indicators) of its budget status. In this price range, I’d recommend looking into alternatives like the Truthear Gate or the Hidizs MS1-Galaxy, both of which provide a more exciting listening experience.
While the Aero does provide sound quality that punches above its weight, the IEM still feels relatively…well, ordinary, especially in the highly competitive ChiFi market. By the current standards of affordable IEMs, the 7Hz Aero could be seen as a dime a dozen.
With that in mind, for those who are looking to get a budget-friendly IEM that stands out, it might be worth exploring other options before settling on the Aero.
Li Jin Soh contributed to this review.