Sennheiser
Sennheiser HD 300 PROtect Closed-Back Studio Monitor Headphones
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The Sennheiser HD 300 PROtect are closed-back, over-ear studio monitor headphones offering high-resolution audio reproduction and switchable peak level protection for musicians, audio engineers, and event staff in broadcast, studio, and live stage applications. The precision-diaphragm dynamic drivers produce a wide frequency response of 6 Hz to 25 kHz with low distortion and a maximum SPL of 123 dB. Switch on the Active Gard hearing protection technology to limit levels above 110 dBA for safe listening even with unpredictable source volumes. The HD 300 PROtect's circumaural, closed-back design provides up to 32 dB of passive isolation from ambient noise.
Thick ear cushions and headband padding ensure comfortable wearing for long listening sessions. The detachable 4.9' single-sided cable is terminated with a 3.5mm stereo mini-jack and may be swapped for other Sennheiser modular cables (available separately). A 1/4" TRS adapter is included to allow easy connectivity with mixers, dedicated headphone amplifiers, and audio interfaces. The HD 300 PROtect headphones fold for compact storage and transport.
Features
- Complies with European EC industrial safety and noise control standards
- Safeguards hearing and presence of mind for listeners
- Switchable Active Gard technology attenuates signals above 110 dB down to a safe level while maintaining clear, distortion-free sound
- Sensitive transducers, precision diaphragms, and a 6 Hz to 25 kHz frequency response provide neutral, high-resolution audio reproduction
- Soft, cushioned viscoelastic earpads and headband padding ensure consistent comfort for long sessions
- Closed-back, over-ear design delivers up to 32 dB of ambient noise attenuation
- Detachable single-sided cable features a 3.5mm stereo mini jack
- Includes 1/4" TRS adapter
Tech Specs
| Driver Type | Dynamic |
| Design Over-Ear | (Circumaural) |
| Earcup Style | Closed-Back |
| Frequency Response | 6 Hz to 25 kHz |
| Sensitivity | 108 dB at 1 kHz |
| Impedance | 64 Ohms |
| Maximum Sound Pressure Level (SPL) | 123 dB at 1 kHz |
| Maximum Power Handling | 500 mW |
| Total Harmonic Distortion | (THD) 0.1% |
| Active Noise Cancellation | No |
| Noise Attenuation | Up to 32 dB |
| Volume Limiting | 110 dB |
| Foldable | Yes |
| Contact Pressure | 6 N |
| Audio Connector to Source | 1/8" / 3.5 mm TRS Straight |
| Adapter (Included) | 1/4" TRS |
| Connector to Earpiece | 1 x Proprietary |
| Cable Design | Single-Sided |
| Cable Color | Black |
| Detachable | Yes |
| In-Line Remote/Microphone | No |
| Cable Length | 4.92' / 1.5 m (Unbalanced) |
Frequently Asked Questions
Yes. MusicMajlis is an authorized dealer for every brand we carry, and every unit ships as-is from the manufacturer with its full original packaging and accessories.
Every item is backed by its official brand warranty. Warranty length and coverage vary by manufacturer -- check the product description or contact us and we’ll confirm the exact terms before you buy.
Orders over AED 499 ship free. We offer next-day delivery across Dubai and Sharjah, and 1-3 business days for the rest of the UAE.
Yes -- split any order into 4 interest-free payments with Tabby or Tamara at checkout, no extra fees.
We offer simple, hassle-free returns within 7 days of delivery for unused items in original packaging. Contact our team to start a return.
Yes. Trade in gear you’ve outgrown for store credit toward this or any other item -- reach out to our team for a quick valuation.
