Sennheiser - HD 660S2

Open-Back Headphone
Sale price₹ 54,990
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7 Day Replacement Guarantee

In case you receive the Sennheiser - HD 660S2 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)


Warranty & Services

This Sennheiser - HD 660S2 comes with a warranty from Sennheiser that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about Sennheiser's warranty in India.



Tenure available: 3, 6 and 9 Months Eligibility: Above 18 years of age, Credit Card NOT Required Transaction value: Available on all orders Payment Gateway: Please choose Snapmint Cardless EMI at checkout
Tenure Interest% Downpayment Installment Interest
3 No Cost EMI ₹ 13,748 ₹ 13,748 ₹ 0
6 Low Cost EMI ₹ 13,748 ₹ 7,176 ₹ 1,842
9 Low Cost EMI ₹ 13,748 ₹ 4,971 ₹ 3,574

Snapmint Cashback Offer

Offer valid from 22/03/2023 to 31/03/2023
Users will get 10% cashback upto a maximum of ₹500
The offer is valid only for transactions made through the Snapmint payment option.
The offer is valid only for the first transactions of customers through the Snapmint payment option.
The Cashback offer is valid from 22nd March at 12:00 am to 31st March 2023 at 11:59 pm
The Cashback will be processed on the same day in the Snapmint wallet on which the last EMI is paid.
Cashback is valid only when the customer pays their EMIs on time.
The offer would not be applicable in case of canceled or refunded transactions. In case of a partial refund, the cashback will be applicable only on the remaining value.
The Offer can be availed only once per user during the campaign period.


Tenure available: 3 or 6 Months
Eligibility: All above 21 years of age
Transaction value: Available on all orders below Rs. 60,000/-
Payment Gateway: Please choose Razorpay at checkout

Cashback offer
  1. Valid from 10th Feb to 9th April
  2. Users will get 10% cashback up to a maximum of ₹1000
  3. The offer is valid only once per user during the offer period.
  4. No coupon code required.
Tenure Interest% Installment Interest
3 No Cost EMI ₹ 18,330 ₹ 0
6 No Cost EMI ₹ 9,165 ₹ 0


Tenure available: 3 Months
Eligibility: All Simpl users
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Payment Gateway: Please choose Simpl Pay in 3 at checkout

Tenure Interest% Installment Interest
3 No Cost EMI ₹ 18,330 ₹ 0

Bajaj Finserv

Tenure available: 3 Months
Eligibility: All Bajaj Finserv card owners
Transaction value: All orders above Rs. 4,500/-
Payment Gateway: Please choose Razorpay at checkout

Tenure Interest% Installment Interest
3 No Cost EMI ₹ 18,330 ₹ 0


Tenure available: 3 Months
Eligibility: All Zestmoney users
Transaction value: Depends on your credit limit
Payment Gateway: Please choose Cashfree at checkout

Tenure Interest% Installment Interest
3 No Cost EMI ₹ 18,330 ₹ 0


Cashback Offer
  • Select Cashfree at Checkout to transact through Mobikwik
  • Get Additional Cashback upto Rs. 500/- on transaction via MobiKwik wallet
  • Use Code :- MBK500 on MobiKwik Payment page to avail the additional cashback.
  • Transaction to be done through MobiKwik wallet only
  • Offer can be availed on minimum transaction of Rs. 1999/-
  • Offer can be availed once per user during the campaign
  • Offer valid from 10th January'23 till 30th June'23
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Designed in

Balanced Sound Signature

Wired Headphones 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.

2 Years of

Ideal for Audiophiles

These headphones are designed for discerning music lovers. If you are someone who cares about audio quality "deeply," you'll want a pair of headphones like these.

You can expect them to present a refined listening experience. The audio quality exhibited by these headphones is a beautiful mix of musicality, technical brilliance and high precision.

These headphones deliver a spacious and open soundstage with utmost clarity and detail. Delve into pure sonic bliss with these headphones!

Ideal for
Indoor Use

Balanced Output

38mm Dynamic

Open-Back Design

Headphones with an open-back design, allow air to pass through the earcups. This means that Open-Backs do not block any noise from around you, as closed-backs do, and music being heard will also leak outside to people around you. So they can only be heard in a quiet environment.

However, Open-back headphones do sound more natural and open. Open-back headphones create a feeling of space, presenting audio as if you are sitting at a live concert. Audiophiles swear by open-back headphones, and they sound quite different to closed-backs.

These headphones are perfect for critical listening sessions, mixing and mastering music. They have an accurate soundstage presentation and precise imaging.

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.

Needs Amplification

Headphones and IEMs require a certain level of power to sound their best and work at their full potential. When your headphones or IEMs are underpowered, they can sound thin or muffled.

Amplifiers are required to provide adequate power to your headphone or IEMs to perform at their best. Simply put, amplifiers allow a weak audio signal to be boosted to a powerful one.

To put it into perspective, devices such as your phones and laptops come with an amplifier, but they offer very limited output power. This output may not be sufficient to power headphones and IEMs to shine at their best. This is where a dedicated amplifier is required to deliver adequate power to hear your music in all its glory.


Sennheiser has a 75-year history, past achievements, and inventions in the audio industry as a third-generation family-run company, as well as its desire to influence its future. Sennheiser's engineers work diligently to provide some of the most audiophile-focused headphones available. The manufacturing process for headphones like the HD 600, HD 650, HD660S, HD 800 S, and HD 820, to mention a few, involved extensive research and development. With the same approach, the HD 660S2 was born. The new, high-end Sennheiser HD 660S2 headphone outperforms the iconic HD 660S's excellent performance. Sennheiser is attempting to expand its product line with the HD 660S2, designed specifically for the most demanding listeners. An eye-catching new matte black design is featured on the Sennheiser HD 660S2. It has a classically exquisite appearance with some modern influences. It truly represents sophistication with the text and logo having bronze colour. The HD 660S2 headphones provide an audiophile-grade experience that will take your breath away!



Sennheiser has reduced the transducer size on the HD 660S2 having the all-new 38mm transducer. The HD 660S2 has an extended sub-bass response compared to the HD 660S. It offers a relaxed sound signature with non-offensive tuning, allowing you to listen to your favourite tracks at a stretch. It has exceptional resolution taking you closer than ever to instruments and vocalists. The sound is relatively balanced across the frequency spectrum that does not lead to fatigue if listened to for long hours. The HD 660S2 has a warm and inviting signature combined with extended sub-bass making listening uniquely pleasant and rewarding. It practically begs you to keep going for endless sessions. That’s how HD 660S2 combines the best of both worlds combining non-offensive tuning and optimum comfort. The HD 660S2 gives you an extraordinary experience, allowing you to immerse yourself in music. Dive deeper into the legendary sound of the HD 660S2!



High-end Sennheiser headphones have inspired generations since the HD 580 because of their balanced, natural reproduction. The HD 600, HD 650, and HD 660S all share audible and visual characteristics with the HD 660S2 and are industry standards for neutral audiophile sound. For instance, the HD 660S2 has an updated coil which now matches the renowned HD 600 and HD 650 300-ohm impedance. Moreover, this redesigned coil offers improved electrical damping and magnetic force for an impactful impulse response. The HD 660S2 has significantly better accuracy, responsiveness, and resolution and twice as much sound pressure at the lowest frequencies. Sennheiser has retained extraordinary precision and balance throughout the sub-bass, mid-bass, and beyond. Most impressive is how this affects the listening experience. Extension on the low end changes everything — by creating more space for the sound. Against a deeper backdrop, highs feel more brilliant, the soundstage deeper and open, and emotions stronger with precise imaging. Experience an oasis of sonic bliss with the all-new HD 660S2!



The Sennheiser HD 660S2 is built entirely in Ireland and quickly grabs your attention due to its excellent build quality. The HD 660S2's velour earpads can only be described as a physical delight. The headband won't detract from your music thanks to its soft padding and just-right tension for optimal acoustic alignment. The HD 660S2's open-back design provides an incredibly comfortable environment, even during prolonged sessions. The ergonomic headband and lightweight design rule out any potential discomfort on top of your head. You'll rapidly develop an attachment to a listening experience as physically relaxing as the pleasant, non-fatiguing sound at its core.



Sennheiser is known for designing some of the most versatile cables that are robust and provide exceptional audio transmission. Sennheiser has included two sets of beautiful cables with the HD 660S2 to accommodate your audio configuration. It has no microphonics and achieves a stable connection. The package includes a 6.3mm (Single-Ended) cable and a 4.4mm (Balanced) cable with 1.8m in length, making them compatible with most audio sources. One benefit of using the HD 660S2 with a balanced connection is that it offers an even lower noise floor and excellent dynamic range. The result is a broader soundstage, precisely controlled transients, and impossibly distinct instrument separation.

2 Year Warranty

Don't sweat it, this Sennheiser - HD 660S2 comes with a 2 Year warranty from Sennheiser that covers manufacturing defects. All products featured on Headphone Zone are backed by an original manufacturer's warranty.

Read more about Sennheiser's warranty in India.

Sound Guys

"Specifically: it’s built for sound quality only, so there’s little in the way of advanced features or frills, instead focusing on comfort and performance above any other concern."

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Digital Trends

"In a word, the sound is effortless. It just springs forth and gently bathes you in its detail, instead of pummeling you, which is a possible side effect of closed-back headphones. "

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"The S2 has smooth and delicious treble for high hats and higher pitched instruments. It's done completely different compared to the 600, 660S and 560S. And it's realism."

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Major HiFi

"The S2 does make its case with the improvements in the sound signature. The soundstage depth is an improvement, but the bass and treble also undergo enhancement."

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"Plush earpads and cushy headband padding place the revised 300-ohm transducers at optimal distance from the ear resulting in a spacious soundstage with abundance of detail."

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Audio Science Review

"The coil matches the 300-ohm impedance of the HD 600 & HD 650. This new coil provides higher magnetic force and electrical dampening for cleaner impulse response."

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"It’s clear that Sennheiser not only had sound professionals in mind when creating the 660S2; it is meant to be enjoyed for tender handling of instruments and its buoyant character."

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"The Sennheiser HD 660S2 are very good for neutral sound. They have a warm sound profile and, despite being open-back, pack more thump and rumble than their predecessor."

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"The waiting is finally over, as clearly HD660S2 aren’t only bassier, deeper, and punchier sounding than any other cans from the HD6XX lineup."

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Hi-Fi Trends

"By and large, I found the Sennheiser HD 660S2 Open-Back Headphones to have an immediate sound with lots of clarity, detail, and speed."

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