Description
Sennheiser HD 400 PRO Open Back Studio Reference Headphones – Precision Audio for Mixing and Mastering
Achieve studio-grade accuracy and clarity with the Sennheiser HD 400 PRO Open Back Studio Headphones — your trusted companion for professional mixing, mastering, and audio editing. Whether you're working from home or in a studio environment, these reference headphones deliver a neutral and highly detailed sound that lets you hear your mix exactly as your audience will.
Engineered for precision, the HD 400 PRO features an open-back design and angled 120-ohm transducers, developed by Sennheiser’s acoustic experts. The result? An expansive and transparent soundstage with minimal distortion and deeper bass response — ideal for identifying subtle details in your track.
Designed with long sessions in mind, the HD 400 PRO boasts velour earpads and a lightweight build that ensures superior comfort throughout the day. Its robust, professional-grade construction handles daily use, while the single-sided coiled cable gives you flexibility and freedom of movement. For added convenience, a straight cable is also included.
From critical monitoring to final mastering, the Sennheiser HD 400 PRO provides the reference-level accuracy and comfort that audio professionals demand.
🔑 Key Features:
-
Professional Studio Sound – Neutral, accurate sound ideal for mixing, mastering, and editing
-
Open-Back Design – Creates a wide, natural soundstage for immersive listening
-
Advanced Transducer Technology – 120-ohm drivers with low distortion and enhanced bass clarity
-
All-Day Comfort – Lightweight build with soft velour earpads for extended sessions
-
Flexible Cabling – Includes both a coiled and straight cable for versatile studio use
-
Durable Build – Robust construction built to withstand daily professional demands
Headphone
Wearing Style: Dual Ear with Headband
Foldable: No
Earpiece Swivel: No
Earpiece Design: Over-Ear (Circumaural)
Open/Closed-Back: Open-Back
Sound Field: Stereo
Driver Type: Dynamic
Impedance: 120 Ohms
Active Noise Cancellation: No
Frequency Response: 6 Hz to 38 kHz
Maximum SPL: 110 dB at 1 kHz / 1 Vrms
Volume Limiting / Child-Safe: No
Built-In Controls: No
Built-In Mic: No
Connectivity
Audio Connector: 1x 1/8" (3.5 mm) TRS
Included Adapter: 1/4" (6.3 mm) TRS
Connector Plating: Gold
Cable Design: Detachable; Includes Straight and Coiled Cables
Cable Length:
9.8 ft / 3 m (Coiled Cable)
5.9 ft / 1.8 m (Straight Cable)
Physical
Color: Black
Environmental Resistance: No
Weight: 8.5 oz / 240 g (without cable)
Packaging Info
Package Weight: 1.53 lb
Box Dimensions (L x W x H): 10.6 x 8 x 4.4 in
In the Box
Sennheiser HD 400 PRO Studio Reference Headphones
Coiled Cable
Straight Cable
1/4" Adapter
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.

Description
Sennheiser HD 400 PRO Open Back Studio Reference Headphones – Precision Audio for Mixing and Mastering
Achieve studio-grade accuracy and clarity with the Sennheiser HD 400 PRO Open Back Studio Headphones — your trusted companion for professional mixing, mastering, and audio editing. Whether you're working from home or in a studio environment, these reference headphones deliver a neutral and highly detailed sound that lets you hear your mix exactly as your audience will.
Engineered for precision, the HD 400 PRO features an open-back design and angled 120-ohm transducers, developed by Sennheiser’s acoustic experts. The result? An expansive and transparent soundstage with minimal distortion and deeper bass response — ideal for identifying subtle details in your track.
Designed with long sessions in mind, the HD 400 PRO boasts velour earpads and a lightweight build that ensures superior comfort throughout the day. Its robust, professional-grade construction handles daily use, while the single-sided coiled cable gives you flexibility and freedom of movement. For added convenience, a straight cable is also included.
From critical monitoring to final mastering, the Sennheiser HD 400 PRO provides the reference-level accuracy and comfort that audio professionals demand.
🔑 Key Features:
-
Professional Studio Sound – Neutral, accurate sound ideal for mixing, mastering, and editing
-
Open-Back Design – Creates a wide, natural soundstage for immersive listening
-
Advanced Transducer Technology – 120-ohm drivers with low distortion and enhanced bass clarity
-
All-Day Comfort – Lightweight build with soft velour earpads for extended sessions
-
Flexible Cabling – Includes both a coiled and straight cable for versatile studio use
-
Durable Build – Robust construction built to withstand daily professional demands
Headphone
Wearing Style: Dual Ear with Headband
Foldable: No
Earpiece Swivel: No
Earpiece Design: Over-Ear (Circumaural)
Open/Closed-Back: Open-Back
Sound Field: Stereo
Driver Type: Dynamic
Impedance: 120 Ohms
Active Noise Cancellation: No
Frequency Response: 6 Hz to 38 kHz
Maximum SPL: 110 dB at 1 kHz / 1 Vrms
Volume Limiting / Child-Safe: No
Built-In Controls: No
Built-In Mic: No
Connectivity
Audio Connector: 1x 1/8" (3.5 mm) TRS
Included Adapter: 1/4" (6.3 mm) TRS
Connector Plating: Gold
Cable Design: Detachable; Includes Straight and Coiled Cables
Cable Length:
9.8 ft / 3 m (Coiled Cable)
5.9 ft / 1.8 m (Straight Cable)
Physical
Color: Black
Environmental Resistance: No
Weight: 8.5 oz / 240 g (without cable)
Packaging Info
Package Weight: 1.53 lb
Box Dimensions (L x W x H): 10.6 x 8 x 4.4 in
In the Box
Sennheiser HD 400 PRO Studio Reference Headphones
Coiled Cable
Straight Cable
1/4" Adapter
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.
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from 5082 reviews
Just bought it and started using it with my IFI Zen Stack - feels awesome.
This was a natural pick for me, since I wanted to have a completely balanced setup for my HiFiMan Sundara.
Nothing much to add, if you want an optimal balanced setup without spending too much, then look no further.
Thanks AudioStore for being blazing fast with your delivery. I got it withing 48 hours of placing my order! Kudos.

For my HiFiMan Sundara, this is a nice quality 4.4 mm balanced cable. I am buying this for the second time, since the first one got destroyed by my kids.
If you are looking for a good quality 4.4 mm balanced cable, look no further.
Audio

This product is reached my expectation good purchase good audio signal transmission no noise at all.....thank you the audio store👍
Yes

I have used lots of TWS even high end of Samsung and Oppo worth 10K. But IEM sound signature is great! This is my second IEM. I had KZ-ZEX. It has dual driver with electrostatic. Compare with that MoonDrop Chu 2 is better clear and smooth sound signature even with single driver. I am using with Audiocular DAC cost 750. Just go with MoonDrop Chu 2 if you are music lover. Thanks.
Great packaging and quick delivery
Loved the theme of the store and the support of the customer service for every problem I faced. I would be interested in buying new things from the audio store in future.
Good Quality and got a clear case for the player.
Thank you 😊

The quality is great, I felt that the base got a bit reduced and mids and treble enhanced using the same. They look premium. The only downside is that they are slightly bulky as the cable is 16 core and sometimes you can feel it behind the ears. Overall a great cable to upgrade your entry level iems to support balanced output

After going through many websites, I came to know about this particular dac, which is purely oriented on audio amplification with dedicated chip unlike other dacs available under 2k, so ordered and received in two days, to my surprise it has significantly enhanced the audio experience on oneplus 13R, with wired earphones (redmi hi-res of 500 INR), usb type a to c adaptor really came into handy and detected as HiFi audio in my dell laptop, cherry on the cake was the pouch, I didn't expect a pouch, very happy with the purchase...

Visited thier store cum experience center it was very great place for sound lovers . Especially like their display of products in thier demo room.The Owner /Staff were cooperative and also suggested me several IEM's before i select one.

I was looking for IEM Tangzu but they were loud and bass was little low as per my ears.Owner or Associate at store suggested me Audicular i liked the sound as well as bass effect its great product.
The Sennheiser IE 200 delivers impressive value for the price. Comfort-wise, they’re lightweight and fit snugly thanks to the ergonomic design and included foam/silicone tips—great for long listening sessions. Build quality is solid despite the plastic housing, and the detachable braided cable adds durability. As for the sound signature, it’s balanced and clean—tight bass, clear mids, and smooth treble without harshness. Bonus points for the dual-tuning feature that lets you slightly tweak the sound. A fantastic entry-level choice for anyone looking to step into the audiophile world.
There sound is pretty good