SKU: 37638668774

Symphonium Audio Helios Earphone

Sale price$56250.00 Regular price$62500.00
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Ships within 48 hours · Estimated delivery Oct 30 - Nov 4

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Description

Symphonium Audio Helios EarphoneTrueX 4 Way Crossover FLAT Technology Full Balanced Armature Design Tuned in Collaboration with Subtonic. Anodized AL6061 Aluminium Shell Azla Sednafit Standard and Sednafit Short Eartips 26AWG Altalune Nova in 4 Wire Configuration Available in 3. 5mm and 4. 4mm terminations Hand Crafted in Singapore The Technical Reference The Helios is a statement class product that represents a generational leap for us. Recognized for it's legendary technical

  • TrueX™ 4-Way Crossover 
  • FLAT™ Technology 
  • Full Balanced Armature Design
  • Tuned in Collaboration with Subtonic.
  • Anodized AL6061 Aluminium Shell 
  • Azla Sednafit Standard and Sednafit Short Eartips
  • 26AWG Altalune Nova in 4 Wire Configuration
  • Available in 3.5mm and 4.4mm terminations
  • Hand-Crafted in Singapore

The Technical Reference

The Helios is a statement class product that represents a generational leap for us.
Recognized for it's legendary technical ability, the Helios disproves the stereotypes commonly associated with multi-BA driver earphones. The Helios offers an exceptionally clean sub-bass punch that hits hard, without coloring the clarity of vocal presentations.

Tuned for a smooth and detailed midrange, the Helios also features class-leading treble extension that pushes the limits of balanced armature tweeters. We combined the best features from different monitors into one exceptional product.

Powered by an integrated TrueX™ 4-Way crossover and FLAT™ technology, the Helios is sure to impress with its dynamism and vigour and will deliver an unrivalled audio experience.

Tuned in Collaboration with Subtonic

Infinite Linearity

Featuring Filtered Linear Attenuation Tuning (FLAT™) Technology - a proprietary circuit developed in-house with Subtonic.

Working synergistically with Helios’s TrueX™ 4-way crossover, the Helios will not be affected by impedance mismatch due to difference in source used. You will be able to listen to the same unimpeded sound regardless of the device you are using.

Premium Cables

The Helios comes bundled with premium quality Altalune Audio Nova 26AWG Type 2 Litz OCC copper cables that are designed to deliver an exceptional listening experience with great ergonomics and low impedance.

Each cable is designed down to the finest details such as solder used and are completely hand built in Singapore.

Exceptionally Durable

Crafted from high-grade T6 heat-treated AL6061 Aluminium alloy, the Helios is engineered for durability and long-lasting performance. The T6 heat treatment significantly improves its strength, hardness, and durability while also enhancing its resistance to corrosion and fatigue. This gives the maximum possible strength and hardness for our IEMs, ensuring that the Helios can withstand even the most rigorous use.

Whether you're performing on stage or listening on the go, the Helios Earphone is built to last

TrueX™ 4-Way Crossover

By utilizing a true 4-way crossover, we are able to tune each driver to the exact specifications we require to achieve the best possible sound.

PrecisionMatch™

Each earphone undergoes rigorous channel matching and reference matching with PrecisionMatch™ technology to guarantee a superior listening experience.

Quality Eartips

To squeeze out every last bit of performance, the Helios comes with Azla Sednafit Standards for an uncompromised listening experience.

Specifications
  • Driver Crossover: TrueX™ Custom 4-Way Crossover with FLAT™ Technology
  • Frequency Response: 12Hz - 24kHz, ± 2 dB
  • Sensitivity: 104dB/Vrms @ 1 kHz
  • Impedance: 8.50 Ohms @ 1 kHz
  • Socket: Spring Loaded 0.78mm 2-Pin
  • Cable: 26 AWG Pure OCC Copper Litz Nova
  • Cable Impedance: 0.20 Ohms (2.5mm), 0.25 Ohms (3.5mm), 0.28 Ohms (4.4mm) @ 1kHz
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 37638668774

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KevCape
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★★★★★ 5
Gift for my wife. I win!
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Reviewed in the United States on October 9, 2025
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M. Garcia
Dallas, US
★★★★★ 5
Durable and stylish
Color: Black
Bought this for my teenage daughter. The bag is super sturdy and a great deal for the price. All of the pockets help keep her organized and provide plenty of space for all she needs. The canvas is easy to clean and can be wiped with a rag. I plan to buy another in a fun color!
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Reviewed in the United States on September 20, 2025
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Chef de Cuisine
Pawtucket, US
★★★★★ 4
Nice looking medium sized backpack purse
Color: Pink
Although it says nylon in the description, mine is a soft pleather in a soft pink color. Although it has a lot of pockets for storage, it isn't large capacity. It is good for a wallet, phone, water bottle, sandwich, perhaps a cosmetic bag, and that's about it. I do not like pink accessories but this is a creamy light tone of pink and looks nice. The straps are adjustable and very comfortable in the same padded pleather. Lightweight.
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Reviewed in the United States on September 20, 2025
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KrissieB
Port Orchard, US
★★★★★ 5
Nice Backpack
Color: Beige
Nice soft beige color. A perfect backpack for me to take to work and school.
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Reviewed in the United States on October 18, 2025
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Perry Brown
Draper, US
★★★★★ 5
Great to take on a trip
Color: Black
We love to cruise and always take an extra backpack with us so we can load up on the travel booty and have a place to put it. Works well as your "one plus" item on the airlines. So the quality on this backpack is just fine. No issues at all. Nothing was falling apart or coming off. Very small when you fold it up which is great for packing in your suitcase. Holds a ton of stuff.... I'd do some shopping to make sure this fits your needs. There are a ton of backpack's in this price range and some appear to have more features.... Also looks... some are cooler looking, but that's just my opinion...even though I'm right... This will do well for you as others will do too... You get a 30 day return policy with this so you could try it out first to see if you like it... if not, return it... nothing to loose...
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Reviewed in the United States on October 21, 2025

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