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Sennheiser HD 300 PRO Overview

The Sennheiser HD 300 PRO are closed-back circumaural headphones designed for mixing and other pro audio applications. With a frequency response of 6 Hz to 25 kHz, these headphones provide crystal clear sound reproduction, while also offering up to 32 dB of passive noise reduction. Their dynamic drivers offer a linear frequency response across the entire spectrum and are built to remain distortion-free, even when pushed to an SPL of up to 123 dB.

The HD 300 Pro sports viscoelastic earpads that are intended to be comfortable and facilitate extended, prolonged listening sessions. The isolation of the acoustic drivers within the unit's earcups lends to the experience, bolstering passive noise isolation as well as long-lasting comfort. The included, exchangeable cable measures 4.9' and terminates in a 3.5mm connection. A 1/4" adapter is included.

Earpiece Design Over-Ear (Circumaural), Closed-Back
Earpiece Connection / Wearing Style Headband
Foldable Yes
Driver Type Dynamic
Impedance 64 Ohms
Contact Pressure 6 N
Frequency Response 6 Hz to 25 kHz
Sensitivity 108 dB at 1 kHz / 1 Vrms (Passive)
Maximum Sound Pressure Level (SPL) 123 dB at 1 kHz
Maximum Power Handling 500 mW
Noise Attenuation Up to 32 dB (Passive)
Audio Connector to Source 1 x 1/8" / 3.5 mm TRS Male Straight
Adapter (Included) 1/4" TRS
Cable Design Single-Sided, Coiled
Audio Connector to Earpiece 1 x Hard-Wired
Cable Length 150cm
Cable Colour Black
Operating Temperature 5 to 131°F / -15 to 55°C
Storage Temperature -67 to 158°F / -55 to 70°C
Operating Humidity 90% (Recommended)
Colour Black
Weight .297 Kg (without Cable)

* Specifications subject to change by the manufacturer without notice

  • Sennheiser HD 300 Pro Monitoring Headphones
  • 1/4" Adapter
  • 1 3.5mm Cable


* Dispatch timeframes are indications only and may vary for multiple quantities. Timeframes are updated regularly during normal business hours.