Sennheiser HD 300 Pro Monitoring Headphones

Closed-Back Studio Monitoring Headphones with Passive Noise Reduction

The Sennheiser HD 300 Pro Monitoring Headphones are designed for mixing and other professional audio applications where accurate monitoring, comfort, and isolation are important. Their closed-back circumaural design surrounds the ears to help reduce unwanted ambient noise, making them a practical choice for studio work, production rooms, editing stations, and other focused listening environments.

Dynamic drivers deliver a linear frequency response across a 6 Hz to 25 kHz range, supporting clear audio reproduction for professional monitoring tasks. The HD 300 Pro also provides up to 32 dB of passive noise reduction and is constructed to remain distortion-free at sound pressure levels up to 123 dB.

For long listening sessions, the HD 300 Pro uses viscoelastic earpads and a padded headset design intended to support comfort during extended use. The headphones are foldable for storage and transport, with a wired 3.5mm TRS connection and included quarter-inch TRS adapter for compatibility with supported professional audio equipment.

With a 64-ohm impedance, 108 dB sensitivity at 1 kHz / 1 Vrms, 500 mW maximum power handling, and a 4.9 ft cable, the HD 300 Pro fits well into monitoring setups that require reliable wired headphone performance.

Key Features

• Closed-back circumaural monitoring headphones for mixing and professional audio applications
• Dynamic drivers with linear frequency response across the audio spectrum
• 6 Hz to 25 kHz frequency response for detailed monitoring
• Up to 32 dB passive noise reduction for focused listening
• Viscoelastic earpads and padded headset design for prolonged listening
• 3.5mm TRS connection with included quarter-inch TRS adapter

Professional Applications

• Studio mixing
• Audio editing
• Production monitoring
• Critical listening
• Professional audio playback review

System Integration

The Sennheiser HD 300 Pro integrates into wired professional audio systems that provide compatible 3.5mm TRS or quarter-inch TRS headphone outputs. Its closed-back over-ear design, passive isolation, and foldable construction make it suitable for studio desks, editing rooms, production workstations, and portable monitoring setups.

Broadcast Workflow Benefits

For professional monitoring workflows, the HD 300 Pro helps users concentrate on program audio by combining passive noise reduction with clear dynamic-driver reproduction and long-wear comfort. This supports more focused mix decisions, cleaner playback review, and practical day-to-day monitoring in active production environments.

Frequently Asked Questions

Are the Sennheiser HD 300 Pro headphones closed-back?

Yes. The HD 300 Pro uses a closed-back circumaural design that surrounds the ears and helps reduce unwanted ambient noise.

How much passive noise reduction does the HD 300 Pro provide?

The HD 300 Pro provides up to 32 dB of passive noise reduction.

What is the frequency response of the HD 300 Pro?

The HD 300 Pro has a frequency response of 6 Hz to 25 kHz.

Does the HD 300 Pro include active noise cancellation?

No. The HD 300 Pro does not include active noise cancellation. It uses closed-back construction and passive noise reduction for isolation.

What is included with the HD 300 Pro?

The package includes the Sennheiser HD 300 Pro Monitoring Headphones, a quarter-inch adapter, one 3.5mm cable, and a limited 2-year manufacturer warranty.

Related Equipment and Workflow Compatibility

The HD 300 Pro is compatible with supported professional audio equipment that provides 3.5mm TRS or quarter-inch TRS headphone connectivity. It is useful in mixing, editing, production, and monitoring environments where wired operation and closed-back isolation are needed.

Its foldable construction and passive noise reduction make it practical for users who need a dependable monitoring headphone that can move between studio workstations, production rooms, and portable audio setups.

Why Professionals Use This Type of Product

• Helps reduce unwanted ambient noise during monitoring
• Supports clear reproduction for mixing and professional audio work
• Provides closed-back over-ear isolation for focused listening
• Offers padded comfort for prolonged listening sessions
• Connects to supported 3.5mm and quarter-inch headphone outputs

Additional Compatibility Information

The Sennheiser HD 300 Pro Monitoring Headphones are a strong fit for users searching for closed-back studio headphones, professional monitoring headphones, passive noise reduction headphones, mixing headphones, and wired headphones for compatible studio and production equipment.