Bought the 7Hz Sonus out of curiosity; it felt like a 20 dollar IEM with 40 dollars of accessories, so they gave it away.
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Reviews
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Likes the 7Hz Sonus a lot; the sound is very clean, and they use it with foam tips.
Bought the 7Hz Sonus for band use and gaming and is really happy with it.
For a 1DD+1BA set the 7Hz Sonus does a lot right; treble is its strong point, though it lacks a little bass.
Loves the 7Hz Sonus and finds its tuning near perfect, though it got fatiguing for them over time.
After daily driving the 7Hz Sonus for over two months they found it harsh and in-your-face, with details that started to sound forced; 8/10 dropped to 7/10.
Just received the 7Hz Sonus and it sounds weird next to their 7Hz Zero, with a nasal, elevated midrange even after tip-rolling.
Got the 7Hz Sonus for about 32 dollars; a nice upgrade from the Zero 2 with a wider soundstage.
Added the 7Hz Sonus because they had no red IEMs that fit them; it won't replace their Explorers.
After two years with the 7Hz Sonus for Warzone, it does decently on verticality, soundstage and detail, but bunches up in chaotic fights.