Field Test · Studio Gear Review
Sennheiser HD 620S Mic Bundle
Technical assessment of Sennheiser HD 620S closed-back headphones and microphone bundle
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- Sennheiser HD 620S
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Spec Sheet
- Wired headphones
- Circumaural
- Closed-back design
- Dynamic
- Frequency range: 6 – 30,000 Hz
- Impedance: 150 Ohm
- Sound pressure level: 105 dB SPL/1kHz/1Vrms
- Driver size: 42 mm
- Distortion factor: < 0.05% (1 kHz, 90 dB SPL
- Slightly angled transducers for a wider sound stage
- Artificial leather ear pads
- Detachable, smooth and single-sided 1.8 m cable
- Connection: 3.5 mm stereo mini jack
- Weight: 326 g
- Colour: Black
- Stereo-Adapter from 3.5 mm to 6.3 mm jack
- Suitable for: HD 505, HD 550, HD 560S, HD 569, HD 599, HD 599 SE, HD 620S
- Add-on boom arm microphone
- Frequency: 100 Hz – 16000 Hz
- Sound pressure level: 132 dB
- Cable length: 1.5
- 3.5 mm stereo mini jack connection
- In-line volume control
- Weight: 36 g
- Colour: Black
- HD 500 BAM
- Y adapter
- Three replacement pop screens
- Operating instructions
Studio Log
| Available since | November 2025 |
|---|---|
| Item number | 631263 |
| Sales Unit | 1 piece(s) |
| Design | Over-Ear |
| System | CLosed Back |
| Impedance | 150 Ohms |
| Frequency range | 6 Hz – 30000 Hz |
| Adapter | Yes |
| Replacable Cable | Yes |
| Marrone/Argento | Black |
| Sensitivity | 105 dB |
| Max. SPL | 105 dB |
| Type Of Connector | Jack, mini-jack |
| Adaptor | Yes |
| Weight | 326 g |
| Replaceable Cable | Yes |
| Colour | Black |
Demo Footage
Field Photography
QC Pass — Field Test
Customer Review Summary
Introduction to the Sennheiser HD 620S Mic Bundle
The Sennheiser HD 620S Mic Bundle presents a combination of over-ear closed-back headphones paired with an add-on boom arm microphone and essential accessories. Released in November 2025 and retailing at £262, this product aims to cater to users seeking a controlled listening experience alongside clear voice capture. This analysis focuses on the detailed technical specifications and their implications for potential applications.
Headphone Design and Build
The HD 620S headphones exhibit a circumaural design with artificial leather ear pads to ensure comfort during extended use. These closed-back headphones weigh 326 grams, striking a balance between durability and portability for professional or home studio environments. The enclosure style benefits noise isolation by preventing sound leakage, which is essential for detailed monitoring without ambient interference.
- System: Closed-back dynamic driver
- Driver size: 42mm
- Transducer configuration: Slightly angled for an enhanced sound stage
The resistive impedance of 150 Ohms indicates compatibility primarily with audio interfaces or devices capable of delivering sufficient power. This makes them ideal for studio hardware rather than direct connection to low-power consumer electronics.
Performance Specifications
Frequency response ranges from 6 Hz up to 30,000 Hz, spanning well beyond the standard audible spectrum. This wide frequency range indicates the potential for detailed audio reproduction, capturing deep bass and extended highs. The maximum sound pressure level is 105 dB, which meets common professional audio standards without risking clipping in most monitoring scenarios.
- Sensitivity: 105 dB SPL/1kHz/1Vrms, ensuring adequate volume levels
- Distortion: Less than 0.05% at 1 kHz / 90 dB SPL, demonstrating precise sound fidelity
The inclusion of a replaceable, smooth 1.8-metre single-sided cable with a 3.5 mm stereo mini-jack connector offers practical usability and ease of maintenance. Additionally, a stereo adapter converts 3.5 mm to the more common 6.3 mm, supporting compatibility with professional audio equipment such as amplifiers and mixers.
Microphone and Bundle Accessories
The add-on boom arm microphone (HD 500 BAM) supplied in this bundle utilises a dynamic capsule intended for speech. It covers a frequency range from 100 Hz to 16,000 Hz, which targets vocal clarity while excluding unnecessary low-frequency noise typical in room ambiance. The microphone’s maximum SPL is rated at 132 dB, allowing distortion-free handling of loud sound sources.
- Microphone cable length: 1.5 metres with 3.5 mm stereo mini-jack connection
- In-line volume control: Provides immediate level adjustment
- Weight: 36 grams, lightweight for comfortable use during extended sessions
Included accessories enhance functionality, such as a Y adapter facilitating simultaneous headphone and microphone use through one source, and three replacement pop screens to mitigate plosive sounds during vocal recording. Operating instructions clarify setup and use.
Summary of Technical Merits
- Robust closed-back design minimises environmental noise and sound leakage
- Wide frequency response supports detailed and balanced audio reproduction
- High impedance and sensitivity suitable for professional monitoring
- Detachable cables enable convenient replacement and flexible connectivity
- Microphone bundle includes features oriented towards clear vocal capture and noise reduction
- Sufficient accessory package improving the practical application of both headphones and mic
The Sennheiser HD 620S Mic Bundle is technically well-rounded, addressing the needs of users requiring reliable and precise headphones combined with an adaptable communication microphone. Its design and specifications suggest focus on professional audio monitoring with supplementary voice input, making it a candidate for content creators, broadcasters, or sound engineers who prefer a closed-back monitoring environment.
