A reference-oriented full balanced-armature IEM tuned in collaboration with Subtonic and built around Symphonium's TrueX 4-way crossover. It is positioned for both stage performance and listening on the go.
The Symphonium Audio Helios is a premium all-balanced-armature wired IEM that delivers a forceful, detailed, and technically impressive sound, with a notable emphasis on bass impact and holographic imaging. It presents a demanding load requiring substantial amplifier power, and its angular, large shell may pose fit challenges for some users. Overall, it is a standout choice for critical listeners who favor an energetic, incisive presentation over a relaxed or warm tuning.
Paraphrased from published reviews & specs - not an original hands-on test. Our AI disclosure.
| Driver | balanced armature |
|---|---|
| Driver type | balanced-armature |
| Impedance | 8.5 Ω |
| Driver | balanced armature |
|---|---|
| Driver type | balanced-armature |
| Impedance | 8.5 Ω |
| Active noise cancelling | No |
|---|
| Connector | 2-pin 0.78 mm |
|---|
4 source(s) feeding this product's score.
Video reviews we found, each condensed to its verdict. They do feed the HearWiki score, at a measured weight below what a published written review carries.
27:50The reviewer praises the Symphonium Helios as a technically outstanding IEM that sets a new benchmark for its price, with exceptional sub-bass, clarity, and dynamics. However, it has a V-shaped tuning that may not suit neutral listeners, and its large size and high power requirements are notable drawbacks. Overall, it's a unique and fun-sounding IEM that excels in certain areas but makes trade-offs.
10:15The reviewer considers the Symphonium Helios the best kilobuck IEM they've heard, praising its balanced armature bass, standout treble, and strong technicalities like imaging and dynamics. However, they note the large size and fit may be a point of contention, and the treble can be abrasive with certain ear tips, requiring tip rolling to get the best sound.
1:01:26The reviewer finds the Helios to be a well-built, boutique IEM with a unique sound signature, but notes that its high price and some ergonomic quirks may make it a niche choice. He appreciates the premium accessories and detailed tuning, yet feels it doesn't fully justify its cost compared to more established competitors.
14:32The reviewer highly recommends the Symphonium Helios as an exceptional value IEM, praising its neutral-with-bass-punch tuning, master-class resolution, and dynamic bass that rivals much pricier models. He notes it performs well with portable sources and offers strong ergonomics, with only minor nitpicks about the cable lacking ear guides.
Summaries are AI condensations of each video's own conclusion, not transcripts. Titles, thumbnails and view counts belong to their channels.
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