In this article, I review the 7Hz Five IEM. The Five features a rare driver configuration, consisting of 5 custom 6mm dynamic drivers per side. The price is 149 USD.
Disclaimer: This sample was provided by Linsoul for an honest review. All observations and opinions here are my own, based on my experience with the product.
7Hz Five
Specifications
Frequency Response: 5-40000Hz
Impedance: 12Ω
Cable Type: Silver-plated cable
Cable Length: 120±5cm
THD: <0.5%/1KHz
Sensitivity: 105dB
Pin Type: 0.78
In the Box
- 7Hz Five IEM
- Detachable 0.78mm 2-pin SPC cable
- 4 pairs of 7Hz H07 silicone eartips
- 3 pairs of Barrel silicone eartips
- Carrying case
- 4 sets of spare nozzle covers
- 4 sets of spare filters
Design
The Five has aluminium faceplates with a criss-cross pattern and opaque resin shells. The five dynamic drivers inside are visible within which is interesting to see. I found the Five comfortable and could wear the IEMs for prolonged periods.
The included silver-plated copper cable has a flat ribbon design. It looks interesting but it doesn’t handle very well and I would expect to find something more substantial with an IEM at this price.
Sound
The 7Hz Five has a V-shaped sound signature with elevated bass, a recessed midrange and boosted treble. Despite the midrange being so recessed, the overall audio quality is reasonably good.

What I like about the bass is its ability to adapt to each recording; it doesn’t sound ‘bass-loaded’ on every track but it comes out in force when intended. It’s punchy and impactful yet still tasteful in quantity and agile enough to not sound sluggish.
The midrange has reasonable clarity but the resolution and instrument separation are only moderate. Vocals are pulled back somewhat so I wouldn’t recommend the Five for fans of vocal-heavy or acoustic music genres.
The treble is a tad edgy but it is well-executed and although it borders on edginess, it never crossed my tolerance threshold. One benefit of this type of forward treble and the muted midrange is detail retrieval where the Five excels. The soundstage dimensions are reasonably large but the instrument separation and layering are fairly modest.
Verdict
The 7Hz Five is an ambitious IEM, packing in 5 dynamic drivers per side. For the most part, the engineers have created a pleasant tuning with moderate technical performance. While the resulting sound is decent, I think the Five is priced too high for the audio quality it delivers. However, if you’re a basshead wanting an IEM with powerful lows paired with good detail retrieval, you might want to check this one out.