7HZ - Sonus

In-Ears With 1DD + 1BA Drivers

Sale price₹ 4,990 Regular priceMRP: ₹ 5,999

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7 Day Replacement Guarantee

In case you receive the 7HZ - Sonus with a manufacturing defect, please raise a return request within 7 days of delivery.

However, if you receive an incorrect / damaged / different product or one with missing accessories, please raise a return request within 24 hours of delivery. In case you receive a product with a missing, incorrect, or faulty accessory, you will be given a replacement accessory instead of the entire product.

Please make sure that the product is in the original packaging with all the accessories it came with. We'll also need an unboxing video and images of the parcel to investigate about the discrepancy. You may be asked to share images of the product and the packaging received for us to determine the damage or defect prior to approving the return request. The free replacement will be shipped only once the original order is returned.

A replacement will be issued only if:

- It is found to be defective
- It is determined that the product was not damaged while in your possession
- The product is not different from what was shipped to you
- The product is returned in original condition (with brand’s/manufacturer's box, MRP tag intact, user manual, warranty card and all the accessories therein)


The 7HZ - Sonus is eligible for Easy Exchange within 7 days of delivery. Your exchange request will be accepted only once. We want to make sure that you end up with a product that you 100% love.

An exchange will be allowed only if the product is returned in original condition (with brand’s/manufacturer's box, MRP tag intact, user manual, warranty card and all the accessories therein)

You will receive full Store Credit in your Headphone Zone account so that you may choose another product from our website which would be more suited to your needs. Refunds will NOT be possible under our 7 Day Easy Exchange Policy.

Warranty & Services

Don't sweat it, this 7HZ - Sonus comes with a 1 Year warranty from 7HZ that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about 7HZ's warranty in India.

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Balanced Sound Signature

Wired Earphones with a Balanced sound signature presents a precise sound and an enriching listening experience, where sounds are naturally presented without extreme emphasis on any region. With a pair of headphones with this sound signature, you can hear audio with clarity and detail. The sound is vivid and revealing, a perfect mixture of instruments and vocals, lows, mids, and highs. This sound signature works for most music listeners who like switching between various music genres like Classical, Jazz, Blues, Rock, Folk and Pop.

1 Year of

Ideal for Audiophiles

These earphones/IEMs are designed for discerning music lovers. If you are someone who cares about audio quality deeply, you'll want a pair of earphones/IEMs like these. You can expect them to present a Hi-Fidelity listening experience.

The audio quality exhibited by these earphones/IEMs is a beautiful mix of musicality, technical brilliance and high precision. These earphones/IEMs deliver a spacious and open soundstage with utmost clarity and detail. Delve into pure sonic bliss with these earphones/IEMs!

Ideal For Casual Music Listening

These earphones/IEMs are your go-to when you want to sit back and relax. If you’re someone who is looking to listen to music without worrying too much about the technicalities, then these are the perfect fit for you.

You can expect these earphones/IEMs to work conveniently and pair with most devices like smartphones and laptops without needing a DAC & Amp. These offer the ultimate convenience, but we believe that if you care about an immersive listening experience and audio quality, these are not for you!

Ideal for Commuting

If you’re someone who enjoys listening to music while commuting, then you know the value of a good pair of earphones/IEMs. These earphones/IEMs allow you to listen to your favourite track or block out the world for a focused podcast listening experience.

You can expect these earphones/IEMs to offer a seamless connectivity experience. They are lightweight in design and provide noise isolation as an added functionality.

1Dynamic + 1BA

Replaceable Cables

A pair of headphones with a replaceable cable has many benefits, and one of them is if the connecting cable has a problem, it doesn’t mean that you have to buy a new one. If the connecting cable gets pulled or damaged, you can replace it and keep using your good-old headphones or IEMs. This way, your headphones will be protected and will last longer. With the advancements in cable manufacturing, you now get a variety of replacement cables with various termination options, lengths and quality.


Tangle-Free Cables

Every time you reach for earphone/IEM cables to connect them to your earphones/IEM, no matter how neatly you "wrapped" them up, they end up in a giant Gordian knot of frustration. Tangled cables are the bane of modern existence, and everyone owning a wired pair of earphones/IEM can attest to this.

With advances in cable-making techniques and radical approaches to manufacturing, there are now several solutions to this universal problem. You get Flat cables, Mesh Design cables, cables coated with exterior covers and cables designed with a zipper style design to avoid Tangle and attempt to solve the issue.

Works with Android & iOS

One thing all of our phones have in common is that they have replaced the portable media player. These headphones and devices are perfect to pair with your Android and iOS devices and offer functionality previously unknown. If you’re someone who usually switches between a variety of devices with different OS, then these are suited for you. You can expect these headphones and devices to connect seamlessly without any hassle and even offer OS-specific functionality depending on the device. Headphones and devices designed to work with Android and iOS come in wired and wireless formats. Quite often you will also find Hi-Fi equipment offering direct connectivity to devices with Android and iOS to simplify the connectivity process.

Super Lightweight


Established in 2012, 7Hz emerged as a collective of engineers and audio enthusiasts united by their passion for audio excellence. Their mission revolves around harnessing top-notch drivers and employing meticulous circuitry design to create the most efficient audio setups that accentuate the inherent capabilities of these drivers. The name "7Hz" draws inspiration from the Theta Wave, a frequency linked to meditation and harmony. All 7Hz products embody this concept by immersing you in a pure musical trance. The Sonus, their latest addition, marks their debut in the hybrid driver IEM arena, combining a single balanced armature (BA) driver with a potent dynamic driver (DD). This hybrid configuration delivers audio spanning from 10Hz to 20,000Hz. The Sonus design is influenced by the symphonies found in the natural world and employs medical-grade materials in its construction. Complementing the Sonus is a high-quality, detachable silver-plated OCC cable.



The 7Hz Sonus was intricately crafted around the seamless integration of a single balanced armature (BA) driver and a robust dynamic driver (DD). Hybrid IEMs often face challenges in achieving a consistent and coherent sound. However, the Sonus prioritised achieving optimal harmony to address this concern. Through meticulous acoustic and electrical engineering, the Sonus accomplishes a unified fusion of the BA and DD drivers, ensuring that the sound maintains consistency in timbre, tonality, and technical attributes across the entire frequency spectrum. This harmonious blend uncovers intricate audio subtleties within each note. The 7Hz Sonus covers the full range of audible frequencies, from 10Hz to 20,000Hz, ensuring the faithful reproduction of every discernible musical note and micro-detail. The deep and extended low frequencies result in powerful and impactful bass, particularly enhancing the delivery of drums and bass lines. Furthermore, with an impressive total harmonic distortion (THD) of under 1%, the 7Hz Sonus harmoniously combines delicate nuances with a robust bass presence.



The concept behind the 7Hz Sonus draws inspiration from the melodies and harmonies found in the natural world, particularly in the serene sounds of the outdoors. These natural wonders serve as a muse, blending art and science. The fusion of the BA and DD drivers in the Sonus adds depth and complexity to the music, ensuring every note is delivered accurately. Crafted with meticulous artistry, the 7Hz Sonus in-ear monitor is a masterpiece. Its front chamber, crafted from medical-grade materials, optimises sound wave propagation, while the back chamber, constructed from aviation-grade aluminium, balances durability and sophistication. Designed with your comfort in mind, the ergonomic contours of the 7Hz Sonus harmonise seamlessly with the anatomy of your ears. The 7Hz Sonus in-ear earphones come with a high-end silver-plated OCC cable, intricately woven with 49 wires per core across four cores. This configuration guarantees uninterrupted signal transmission, enhancing your auditory experience. Furthermore, the detachable features enable future upgrades according to your preferences.

1 Year Warranty

Don't sweat it, this 7HZ - Sonus comes with a 1 Year warranty from 7HZ that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about 7HZ's warranty in India.

Crafting Blissful Musical Immersion

7Hz, established in 2012, is a collective of engineers and audio enthusiasts dedicated to exploring the boundaries of sound. Through meticulous attention to driver quality and precise circuit design, 7Hz is committed to crafting the most effective audio systems, which fully unlock the innate potential of the drivers. Inspired by the Theta Wave—a frequency linked with states of deep relaxation and harmony—7Hz's products are designed to transport listeners into a state of blissful musical immersion.

Explore Collection

"I'll gladly suggest the 7Hz Sonus to anyone who prefers a more detailed, neutral, and clean sounding in-ear monitor with a good amount of sub bass."

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Check out the most common questions our customers ask. Still have questions? Talk to our Headphone Gurus.

Our customer support is available Monday to Saturday: 10am-6:30pm.Average answer time: 2-3 hours

Customer Reviews

Based on 7 reviews
Vinay Ravikumar (Thrissur)
Seven hertz sonus!! A well balanced masterpiece

I bought this product as a gift for my fiance , to try and get her into the hobby. Once I got it I tried it on to check everything was working. I was floored by how good they sounded .
Firstly , it's very comfortable in the ears . The cable is flat unique and very nice. I can see many companies in the future adopting such a cable.
The sound stage is decent , not too wide.
The soud is well balanced. Bass is sufficiently present and tight .There is more of a mid bass presence. The mods shine in these , they are clear and engaging. The highs are resolving and maturely done . I was actually impressed by the resolution and imaging . Below 5000 rupees right now , I don't think there is anything better.

Hey there, thank you for the great review and ratings! So delighted that you are loving your purchase. Hope you had a comfortable shopping experience. Cheers!

Ivan Thapa (Kolkata)
Great mid range with the best technicalities under 5000

It’s a great sound IEM basically a hexa with more forward vocals I prefer this tuning over the hexa although the hexa does have a wider soundstage and better layering

Thanks for the review! We're glad you like the sound of the 7HZ - Sonus.

L.P. (Aizawl)
Super Tonos!!

The best IEM i have experienced so far, i will give 5 for its design, comfort and ofcourse the sound quality. Hats Off Team Headphonezone from Mizoram.

Wow! Your positive review made our day! Thank you for recognising our efforts to provide a great shopping experience! We value your feedback and can't wait to have you back!

Rewa Maddineni (Hyderabad)
Underrated and pretty decent looking

The cable is different from other IEMs and looks great. The tuning of this is pretty much perfect for gaming, imaging and sound stage seems slightly better than competitors like TE zero:red

Hey there, thank you for the great review and ratings! So delighted that you are loving your purchase. Hope you had a comfortable shopping experience. Cheers!

Amron Costa (Mumbai)

7HZ - Sonus

Hey there, thank you for the awesome ratings!

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