REVIEW! Symphonium Audio Helios: BOUTIQUE… to a fault?

I love seeing new products that sprout from the audio community, and the Helios is just that. Symphonium Audio is a small IEM maker out of Singapore, and the Helios is the product of their partnership with Subtonic, so if you know the right forums and Discord servers to hang out on, you can chat with the people behind this $1,100 earphone. Which is pretty special. But… how’s it sound?

See the frequency response of the Symphonium Helios:,Symphonium_Helios

And check out the Helios on Symphonium’s website:


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DISCLOSURE: This video is NOT sponsored, but Symphonium Audio did loan me this IEM for review. Check them out at

Music by Birocratic. Check him out on Soundcloud:

#SymphoniumHelios #SuperReview

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