Description
Sennheiser HD 300 PROtect Closed-Back Monitoring Headphones
Hear with Precision. Protect Your Ears. Perform at Your Best.
Experience the perfect blend of high-resolution sound, professional-grade comfort, and intelligent hearing protection with the Sennheiser HD 300 PROtect. Designed for sound engineers, musicians, and production professionals, these closed-back monitoring headphones deliver pristine, distortion-free audio while actively protecting your ears from harmful peak sound levels.
At the core of the HD 300 PROtect is Sennheiser’s patented ActiveGard™ technology, which smartly manages unexpected audio peaks above 110 dB. Instead of cutting the sound entirely, it reduces dangerous levels to a safe, clear signal—ensuring complete control without compromising fidelity.
Tailored for accuracy, the HD 300 PROtect features a linear frequency response and high-sensitivity transducers for ultra-precise sound reproduction. Whether you're in the studio or on stage, its noise-isolating closed-back design and refined acoustic tuning inspired by the HD 250 linear offer detailed, immersive audio in any environment.
Comfort is just as important as clarity. With soft, viscoelastic earpads, optimal pressure distribution, and long-lasting materials, these headphones are built for extended use without fatigue. Plus, they feature exchangeable cables with Sennheiser’s trusted system connector—making them a durable, professional companion for daily work.
🔑 Key Features
-
ActiveGard™ Technology: Reduces audio peaks safely without muting sound
-
High-Resolution Sound: Accurate, linear audio for critical monitoring
-
Exceptional Comfort: Soft padding and pressure-balanced fit for long sessions
-
Noise Isolation: Closed-back design effectively blocks ambient noise
-
Built to Last: Durable materials and modular components for longevity
🛡️ Why Choose the HD 300 PROtect?
-
Ideal for professional recording, live monitoring & broadcasting
-
Protects your hearing while preserving clarity
-
Trusted by industry pros for performance and reliability
General:
Wearing Style: Dual Ear with Headband
Foldable: Yes
Earpiece Swivel: No
Earpiece Design: Over-Ear (Circumaural)
Open/Closed-Back: Closed-Back
Sound Field: Stereo
Color: Black / Silver
Audio Performance:
Driver Type: Dynamic
Impedance: 64 Ohms
Maximum SPL: 123 dB at 1 kHz
Maximum Power Handling: 500 mW
Volume Limiting: Yes, limited to 110 dB max
Active Noise Cancellation: No
Controls & Microphone:
Built-In Controls: No
Built-In Microphone: No
Connectivity:
Audio Connector: 1x 1/8" (3.5 mm) TRS
Included Adapter: 1/4" (6.3 mm) TRS
Cable Design: Detachable / Straight
Cable Length: 4.92 ft (1.5 m)
Physical Specs:
Weight: 10.5 oz (297 g, without cable)
Packaging Info:
Package Weight: 1.16 lb
Box Dimensions (L x W x H): 9.7 x 7.6 x 3.5 in
In The Box
Sennheiser HD 300 PROtect Closed-Back Active Gard Studio Monitor Headphones
4.9' Headphone 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 300 PROtect Closed-Back Monitoring Headphones
Hear with Precision. Protect Your Ears. Perform at Your Best.
Experience the perfect blend of high-resolution sound, professional-grade comfort, and intelligent hearing protection with the Sennheiser HD 300 PROtect. Designed for sound engineers, musicians, and production professionals, these closed-back monitoring headphones deliver pristine, distortion-free audio while actively protecting your ears from harmful peak sound levels.
At the core of the HD 300 PROtect is Sennheiser’s patented ActiveGard™ technology, which smartly manages unexpected audio peaks above 110 dB. Instead of cutting the sound entirely, it reduces dangerous levels to a safe, clear signal—ensuring complete control without compromising fidelity.
Tailored for accuracy, the HD 300 PROtect features a linear frequency response and high-sensitivity transducers for ultra-precise sound reproduction. Whether you're in the studio or on stage, its noise-isolating closed-back design and refined acoustic tuning inspired by the HD 250 linear offer detailed, immersive audio in any environment.
Comfort is just as important as clarity. With soft, viscoelastic earpads, optimal pressure distribution, and long-lasting materials, these headphones are built for extended use without fatigue. Plus, they feature exchangeable cables with Sennheiser’s trusted system connector—making them a durable, professional companion for daily work.
🔑 Key Features
-
ActiveGard™ Technology: Reduces audio peaks safely without muting sound
-
High-Resolution Sound: Accurate, linear audio for critical monitoring
-
Exceptional Comfort: Soft padding and pressure-balanced fit for long sessions
-
Noise Isolation: Closed-back design effectively blocks ambient noise
-
Built to Last: Durable materials and modular components for longevity
🛡️ Why Choose the HD 300 PROtect?
-
Ideal for professional recording, live monitoring & broadcasting
-
Protects your hearing while preserving clarity
-
Trusted by industry pros for performance and reliability
General:
Wearing Style: Dual Ear with Headband
Foldable: Yes
Earpiece Swivel: No
Earpiece Design: Over-Ear (Circumaural)
Open/Closed-Back: Closed-Back
Sound Field: Stereo
Color: Black / Silver
Audio Performance:
Driver Type: Dynamic
Impedance: 64 Ohms
Maximum SPL: 123 dB at 1 kHz
Maximum Power Handling: 500 mW
Volume Limiting: Yes, limited to 110 dB max
Active Noise Cancellation: No
Controls & Microphone:
Built-In Controls: No
Built-In Microphone: No
Connectivity:
Audio Connector: 1x 1/8" (3.5 mm) TRS
Included Adapter: 1/4" (6.3 mm) TRS
Cable Design: Detachable / Straight
Cable Length: 4.92 ft (1.5 m)
Physical Specs:
Weight: 10.5 oz (297 g, without cable)
Packaging Info:
Package Weight: 1.16 lb
Box Dimensions (L x W x H): 9.7 x 7.6 x 3.5 in
In The Box
Sennheiser HD 300 PROtect Closed-Back Active Gard Studio Monitor Headphones
4.9' Headphone 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