Introduction: Exceptional Closed-Back Sound
Who says closed-back headphones can’t sound that open? The closed-back HD 620S is for audio enthusiasts seeking a distraction-free listening experience without compromising on natural, airy, and detailed sound. Featuring a remarkably open baffle and angled transducers, it replicates the spatial imaging of loudspeakers while keeping listening sessions secluded.
Superior Design and Features

Secluded Listening Experience
Enjoy undisturbed privacy while listening to exceptional open, natural sound. The HD 620S lets you experience detailed, spacious sounds like never before in closed-back headphones. The stainless-steel reinforced ear cup covers not only add timeless appeal but also provide a private listening session regardless of your surroundings. Ideal for those who prefer sofa concerts over kitchen talks, offering a distraction-free experience with true-to-life vocals and natural, airy sound.

Innovative Closed-Back Design
Open sound in a closed-back design might seem impossible, but the HD 620S makes it a reality. Combining the DNA of the HD 600 and 500 series, the HD 620S brings the best of both headphone families to a closed chassis. The reference-grade 42 mm angled transducers with a 38 mm diaphragm and ultra-light 150-ohm aluminium voice coil deliver exceptional impulse response, expanding the stereo image to an almost panoramic soundstage. This unique design preserves the detailed, smooth sound the 600 series is known for, setting a new standard for closed-back headphones.

Comfort and Longevity
The HD 620S offers timeless design, function, and comfort. The lightweight chassis is bolstered by premium touches that ensure its unique acoustic signature for years to come. Robust, steel-reinforced headband sliders and ear cup covers add long-term durability. In contrast, spacious ear cup covers and supple ear pads made from artificial leather provide superb acoustic isolation and all-day comfort. The HD 620S is ready for hours of fatigue-free, intimate listening.

Immersive Listening for Any Passion
Who doesn’t sometimes want to just switch off and become immersed in their own world undisturbed? With the HD 620S, you can stay in the same room without compromising on privacy or natural, expansive sound. Whether you love gaming, amateur music production, or simply listening to exceptional audio, the HD 620S elevates your experience with extraordinary detail retrieval and spatial awareness.

Understanding Frequency Response
Reference sound in a closed chassis: The frequency is shown in Hertz (Hz) on the X-axis, with bass response from 20-300 Hz, vocal range from 300 to 3000 Hz, and treble from 3000 to 20,000 Hz. The Y-axis shows relative loudness in dB SPL. The HD 620S offers a bass response louder than the HD 600, resulting in a closer to neutral, true-to-life sound.
Cable length: 1.8 m
Ear coupling: Around ear
Ear pad material: Artificial leather on Polyurethane basis
Frequency response: 6 Hz - 30 kHz
Nominal impedance: 150 Ohm ()
Package dimensions: 237x191x96mm (LxBxH)
Package weight: 670 g
Sound pressure level (SPL): 110 dB / 1 V RMS
Storage temperature: -15°C to 65°C
THD, total harmonic distortion: <0,05 % (1kHz/90 db SPL)
Transducer principle (headphones): dynamic, closed
Warranty Period: 2 Year
In The Box
Sennheiser HD620S Closed-Back Wired Audiophile Headphones
Detachable Cable (6')
3.5mm to 1/4" Adapter
Limited 2-Year Manufacturer Warranty
Warranty Period: 2 Year from the date of Invoice
Covered: Manufacturing Defects Only
Website: https://en-in.sennheiser.com/service-support-contact-service-centers-in-india
Contact No: 1800 22 36 32
Email Id: in-info@sennheiser.com
Sennheiser is a well-known brand in the audio industry. They offer a wide range of products catering to both audiophiles and casual listeners. Their products include open back and closed back audiophile headphones, in-ear monitors, ANC headphones, and true wireless earbuds. They are known for their exceptional sound quality and durability. Whether you're a professional musician or just a music enthusiast, Sennheiser has something for everyone.
I am very satisfied with my purchase and currently enjoying hi-res audio with my iem. Best looking and build quality is also good under 1K
This is my first IEM. I like the way it sounds. Though I expected much better soundstage but it is good. After using this, I will definitely buy my second IEM. Trust The Audio Store, they delivered as expected. Actually someone suggested me on reddit to go with audio store and I will definitely recommend others the same.
Just got some time with these and here's my honest take:
Comfort: These things are stupid comfortable. Lightweight shells that disappear in your ears, zero fatigue even after long sessions. Stock tips are meh though—nothing special, you'll probably want to tip-roll.
Sound:
- Vocals are pushed forward and warm with less sparkle/energy up top. Great for that intimate, smooth vocal presentation but not if you want bright, analytical vocals
- Bass is elevated and textured but definitely not basshead levels. Hip-hop/EDM heads will find it lacking
- Treble rolls off early = excellent sibilance control. Zero harshness or fatigue, perfect if you're treble-sensitive
Who's this for? Warm vocal lovers and anyone tired of harsh, sibilant treble. Long listening session champs.
Who should skip? Bassheads, treble sparkle chasers, people wanting analytical/reference sound.
For the price, these carve out a nice niche—they're not trying to do everything, just warm and smooth really well. Worth it if that's your vibe.
Very Crystal Clear Sound And balanced Bass as human ear appreciates (Harman Tuned). For me my expectations matched. Now it's time to see how longer time it's sustain .
After using 4–5 budget to mid-range IEMs, the Simgot EW300 feels like a refined upgrade after one month of use. The sound is well-balanced with clean mids, smooth treble, and controlled bass, No fatigue after long use. Clarity and instrument separation are noticeably better than my other IEMs. Thanks to the TAS and Pritam for auditioning multiple IEMS and helping me choose the this IEMs.
This is an all rounder headphones. Sub bass is extended which can be easily EQ d. Treble is decent.The mids are a bliss. A note for AUDIO STORE: PLEASE DON'T CHEAP OUT ON THE DELIVERY. The headphones were sent by road claiming to be more than 2 kg. It was just 845 gm. Also if bluedart is not working out please get another delivery partner. Imagine a 30k headphones bumping around for a 1000km. The headphones wires came attached which is not correct. Despite all this thank God there was no damage to the headphones.
If you have a budget of Rs 4000 and looking to buy an IEM which can do it all, look no further than Kefine Klean. With two tuning nozzles, one warm and other bright, you are sorted for multiple musical genres.
GREAT Product under 2000,must buy
to be concise this is probably the best iem under 35k,
Pros:
- Sub bass and mid bass clarity, quality and volume is amongst the best, this is not a basshead iem but will definitely please a basshead.
- Mids are not recessed and are as accurate as they can be, however are not vocal forward per se but are slightly elevated compared to "v" shape iems, giving this iem a mild "W" shape signature.
-treble is good but for me was very much dependent on the tips I used, when using with sancai wide bores trebles were nice and clear, bright, might be too energetic for some, however with regular tips was perfectly tame and not sibilant to a point of discomfort and had decent air.
So use wide bores if you want to open up the iems, get a little better imaging and seperation but might make the highs a little too energetic, and with regular tips you get more boomy bass but might lose a little of the stage width but is better for treble sensitive folks.
Cons
Condensation issue might be there on rainy days, the wing style fit may not work for all, the iems are medium size and can fit many ear sizes especially with smaller tips but if you don't do well with wings or have atypical ears it may not be for you.
is reminiscent of new meta style tuning, so if you have iems with similar tuning this may be redundant.
Overall:
9/10 literally doesn't get much better than this whether you're putting in 5k more of 1 lakh more, this is the point of diminishing returns, atleast in my opinion, and from this price point on its mostly accesories or timings which actually make a difference.
fit and comfort was amazing for me, i have normal ears, with smaller canals, fits very well for me with small tips, but might have a few pressure spots depending on the ear.
build quality is very good with a nice metal shell.
The cable is very good and premium, accessories are good, and has a premium feel and looks beautiful with good presentation, over-all worth for the money, atleast for me lol.
however you may want to wait for more reviews on the hype 4 mark 2 and the new tea pro SE, and if you're a basshead the martillo is going to be potential endgame.
Very smooth, once you find the appropriate size it will work wonders.
Got the KZ Castor Pro (Harman Target + improved bass) and I’m honestly happy with it right now.
Bass hits nicely and feels punchy without covering up vocals.
Songs sound clean and balanced, and details come through pretty well.
Comfort is good for longer listening too.
Overall, feels totally worth the money.
* might update Review later If my views and experience changes
It's hard cast to secure your IEM and soft on inside to don't scratch the IEM & good space on in side
One year review: incredible audio quality, strong bass, clean highs, and no wear or tear. These IEMs are truly reliable
It's pretty good for the price, good bass and well maintained treble.
Okay, let's talk about this transparent protective case. If you own the MOONDROP ST2s, this case isn't an option, it's a must-buy. Why? Because the original charging case is lidless and instantly attracts dust and scratches!
Fit and Feel
The fit here is fantastic. It slides on perfectly—it's a snug fit with absolutely no loose gaps, which is exactly what you want. Even though it's super affordable, it feels like genuinely good quality in your hand.
Protection and Design
This protective case does its job perfectly: it seals up the whole unit, protecting the original case from dust and scratches. The magnetic lid on this new case works really well, too. You can shake it all you want, and it won't pop open, which is great insurance against the buds falling out of the original lidless design.
I love the look. The transparent design is super cool because it lets the charging case shine through and reflect its original form, all without adding any noticeable bulk.
Just a Quick Heads-Up
It's important to note that the protective case doesn't block the charging port. This means if you travel a lot, you'll still need to keep an eye on that port and clean it regularly to prevent dust buildup.
Final Verdict
My advice is simple: you need this case. Go buy it! Otherwise, you'll constantly be putting the ST2s in a separate IEM box just to protect them. Honestly, doing both—using the protective case and the IEM box—is the best bet for extra protection, which is what I'm doing now.
Brand Warranty
100% Original products with brand warranty
7 Days Replacement
On all orders*
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Ships in 24 Hours*
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Really happy with the Bunny so far. The compact shell and lightweight design make it very comfortable, and it sits securely in my ears even for long sessions. The sound signature is exactly what I like clean, slightly warm, with punchy but controlled bass, clear mids and non-fatiguing treble that works well across different genres.
The new Sony Walkmans are just as good in quality as the older ones, but now they are more refined with more features. Build quality of the NW-A306 is great with a metal back. The 3.5mm jack provides excellent sound, and I'd recommend using a premium wired headphone or IEM to get the most of this DAP. The software based customisations and modes are great too, I especially like the vinyl simulator.
It has support for a very diverse range of music file formats, and includes one MP3, DSD and FLAC sample in the internal storage to give the user a taste of it's capabilities and all 3 sound fantastic.
I am very impressed with the product.
Also, I'd like to mention that the packing made by Audio Store was very well done, and the package was delivered on time.
The Audiocular Spark CX31993 + MAX Amp delivers a clear and noticeable upgrade over phone audio. Sound is louder, cleaner and more detailed with better bass control and separation.
It drives IEMs easily, works flawlessly with Android, and stays cool during long listening sessions. Build quality is solid for such a compact device.
For the price, this DAC offers outstanding performance and is a must-have upgrade for serious music listeners.
I am very satisfied with my purchase and currently enjoying hi-res audio with my iem. Best looking and build quality is also good under 1K
Great Dac
Excellent sound quality
I got suggested this on reddit. Trust The Audio Store.
Value for the price. You can enjoy music at a different level.
This is my first IEM. I like the way it sounds. Though I expected much better soundstage but it is good. After using this, I will definitely buy my second IEM. Trust The Audio Store, they delivered as expected. Actually someone suggested me on reddit to go with audio store and I will definitely recommend others the same.
I am writing after 1 year and I can tell you definitely that this dac is best in beginners section










