The Sennheiser HD 300 PRO delivers precise, neutral monitoring with 108 dB sensitivity and 123 dB SPL handling. Closed-back, over-ear design with viscoelastic pads ensures comfort and ≤32 dB noise isolation—perfect for long studio sessions, live mixing, or loud environments.
The Sennheiser HD 300 PRO is a professional closed-back monitoring headphone engineered for critical listening in demanding environments, from studios to live stages. Its dynamic transducers reproduce a linear, high-resolution sound with exceptional detail and transparency across the full spectrum, free from coloration or distortion—even at high SPLs up to 123 dB. Advanced acoustic recalibration minimizes diaphragm wobbling and partial vibrations, while optimized air volumes deliver natural, three-dimensional imaging. The circumaural design with soft viscoelastic earpads and split headband provides superior comfort during extended sessions, with passive noise attenuation of ≤32 dB to block loud ambient sound. Built for durability with exchangeable cables and Sennheiser’s proven modular connector system, the HD 300 PRO is the trusted choice for producers, engineers, and musicians who need accurate, fatigue-free monitoring to make confident mix decisions.
Key Features:
- Linear, neutral frequency response for transparent, decision-grade monitoring
- High-resolution dynamic drivers with low distortion and fast transient response
- Closed-back construction with ≤32 dB passive noise isolation
- Viscoelastic earpads and lightweight design for all-day comfort
- 123 dB max SPL handling for loud sources without breakup
- Exchangeable cables with Sennheiser modular connector (mini-jack + adapter)
- Foldable, rugged build ideal for studio, live, and field use
- (1) HD 300 PRO Headphones
- (1) Cable (1.5 m with 3.5mm jack)
- (1) 6.3mm (1/4″) Stereo jack adaptor
- (1) Quick guide
- Model: HD 300 PRO
- Transducer Type: Dynamic
- Wearing Style: Over-ear (circumaural), closed-back
- Connection: Wired
- Max Sound Pressure Level: 123 dB SPL @ 1 kHz
- Sensitivity: 108 ±3 dB SPL / 1 V rms / 1 kHz
- Noise Attenuation: ≤32 dB (passive)
- Impedance: 64 Ω
- Power Handling: 500 mW
- Cable: Detachable, single-sided (1.5 m with 3.5 mm jack + 6.3 mm adapter)
- Weight: 261 g (without cable)
- Earpads: Replaceable viscoelastic foam
