About the Sennheiser HD599
Sennheiser's open-back overacheiver
Sennheiser's open-back overacheiver
This is a hidden gem of sorts in Sennheiser's stellar lineup of headphones. The HD599 'phones were released to little fanfare, but I feel they deserve some love and attention. If great sound is your bag, well, that's the main focus here. Impressive bass for an open-back design, and really fine detail in the mids and highs.
Their soft earpads stayed comfortable through an entire work shift at my house. (Just note that they do leak sound — I decided against wearing them at the office.)
Product highlights:
- over-the-ear, open-back design for clear, spacious sound
- 38mm drivers deliver smooth, natural sound tuned to emulate loudspeakers
- Sennheiser's "Ergonomic Acoustic Refinement" (E.A.R.) design sends audio signals directly to your ears
- padded, stitched leather headband and large, soft velour earcups
- 2 detachable cables:
- 51" cable with miniplug connector
- 10-foot cable with 1/4" connector
- miniplug adapter included
- frequency response: 12-38,500 Hz
- sensitivity: 106dB
- impedance: 50 ohms
- weight: 10.4 ounces
- warranty: 2 years
- Our 60-day money-back guarantee
- MFR # 506831
Fit FactorsSM
- Snug fit
- Stable (stays in place)
- Good for focused listening
What's in the box:
Sennheiser HD599 owner's manual
- Over-ear headphones (brown/ivory)
- 10' Cable with 1/4" (6.3mm) plug (attached to headphones)
- 1/4" (6.3mm)-to-3.5mm Adapter
- 51" Cable with straight 3.5mm plug
- Safety Guide
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More details on the Sennheiser HD599

Features & specs
General | ||
---|---|---|
Fit Style | Over-the-ear | |
Earcup Type | Open | |
Earcup Width x Height | 3.542" x 4.531" | |
Noise-canceling | No | |
Bluetooth | No | |
Bluetooth Version | --- | |
Single-earbud Operation | --- | |
Mic For Taking Calls | No | |
Voice Assistant Access | ||
Amazon Alexa | No | |
Google Assistant | No | |
Siri | No | |
Connectors | ||
3.5mm | Yes | |
1/4" | Yes | |
Lightning | No | |
4.4mm balanced | No | |
XLR4 balanced | No | |
2.5mm | No | |
Other | None | |
Specs | ||
Frequency Response | 12-38.5k Hz | |
Sensitivity | 106 dB | |
Impedance | 50 Ohms | |
Weight | 10.4 ounces | |
Cord Length | 120" + 51" | |
Parts Warranty | 2 Years | |
Labor Warranty | 2 Years |
Product Research
Features
Overview: The new Sennheiser HD 5 series of headphones feature a contemporary design with a soft, padded headband and ear cups. Featuring Sennheiser's proprietary transducer technology and E.A.R. (Ergonomic Acoustic Refinement) design, the HD 5 series headphones deliver excellent sound quality from your smart device or home stereo system. The HD 599 model comes with a 10' cable with a 1/4" (6.3mm) plug for your home stereo, and a 51" cable with a 3.5mm straight plug for your portables. A 1/4"-to-3.5mm adapter is included, allowing you to use the 10' cable with a device or component with a 3.5mm headphone jack.
Note: The large diameter of the 1/4"-to-3.5mm adapter may interfere with some smartphone and tablet cases, preventing a full connection to the device.
Open Back Design: The HD 599 headphones headphones feature an open back design that lets you be a part of your listening environment. Sennheiser's E.A.R. technology directs the sound directly to your ears to give you a natural sounding listening experience, similar to listening to well-placed loudspeakers. The high-end transducers used in the HD 5 series delivers deep, satisfying bass with clean, smooth mids and highs.
Stylish: The elegant look of the HD 599 is highlighted by the matte metallic detailing on the ear cups and stylish ivory color scheme. The large soft padded detachable ear pads are covered in plush brown velour, while the wide padded headband features an elegant stitched brown leather cover.
Cable: The HD 599 comes with a high-quality 10' cable with a full-size 1/4" (6.3mm) plug, designed for plugging into your home stereo equipment. You can also use the headphones in the recording studio for mixing or monitoring live performances. A 1/4"-to-3.5mm adapter is included for the 10' cable so you can listen to your smartphone, tablet, or other device equipped with a mini-jack. The adapter has a large diameter that will likely interfere with your smartphone or tablet case, preventing you from completely inserting the plug into the device. Also included is a shorter 51" cable with a straight 3.5mm plug for listening to your devices on the go. (You will have to control your music manually on the device, as there is no in-line remote on this cable.)
Specifications:
- Frequency Response: 12Hz - 38,500Hz
- Impedance: 50Ω
- Sound Pressure Level (1 kHz/1 Vrms): 106dB
- THD (1 kHz/100dB): <0.1%
- Weight: 10.4 ounces
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