Sennheiser's New HD 505 Headphones Bring Audiophile Sound To The Masses

Sennheiser has begun shipping its HD 505 Copper headphones. These open-back audiophile headphones are aimed at music lovers who want to upgrade their headphone listening to the next level.
The HD505 headphones offer classic Sennheiser tuning with plenty of treble detail and a rich bass. The lightweight design is made for comfort and should please budding audiophiles looking for the finessed sound that only open-back headphones can deliver.
​'The HD 505 is for anyone ready to experience the audio awakening a great set of Sennheiser headphones is known for,' says Klaus Hanselmann, Sennheiser's audiophile product manager. 'There is something truly special in here that puts serious listening within arm's reach of the emerging audiophile or gamer.'
​These new headphones with their custom-designed 120Ω dynamic drivers housed in an open earcup are a big step up from the $100 closed-back headphones that tend to dominate the market. The drivers are manufactured at Sennheiser's audiophile factory in Tullamore, Ireland, the same facility that turns out a lot of the brand's high-end headphones and IEMs.
With a frequency response ranging 12Hz to 38,500Hz, plus total harmonic distortion measuring less than 0.2%, the Sennheiser HD505 Copper have a tuning that delivers a balanced sound signature with a punchy bass, clear mids and a top end that has very few harsh edges.
By angling the drivers to recreate the classic triangular positioning of a set of nearfield loudspeakers, the HD505 headphones manage to project an expansive soundstage that has the kind of imaging that makes the listener feel as if they are in the front row of a concert.
Sennheiser's new HD 505 headphones are based on the brand's HD 500 chassis, which has been lauded for its comfort and lightweight fit. The icing on the cake is the headphones' copper accents that give them a look of sophistication.
The surprising aspect of these headphones is how light they are to wear. Weighing in at just 237g, the HD 505 are designed to provide a level of comfort that makes extended listening sessions truly enjoyable. Thanks to their open-back design, the HD505 doesn't suffer from thermal build-up, keeping ears cool and fresh even after three hours of listening to prog rock.
The HD505 are supplied with a detachable 1.8m cable terminated with a single-ended 3.5mm connector and a 6.3mm adapter for use with a wide range of audio sources like amplifiers, sound cards, audio interfaces and A/V receivers.
As with all Sennheiser's 500 series headphones, there's a wide range of cables in different lengths and plug types available for the HD505. There are also alternative ear pads available and they can be easily swapped over by the user without the need for specialist tools.
Sennheiser's modular design means the HD 505 can adapt to changing setups. For example, it's possible to swap out the cable to a balanced mode or even add one with an inline microphone for making phone calls.
As with all open-back headphones, the Sennheiser HD505 leak quite a bit of sound and don't have any passive isolation. What this means in practice is that these are headphones best used for solo listening in a quiet place. So, if that sounds like your kind of thing, these headphones could be an affordable way to get an open and laid-back audiophile sound.
​The Sennheiser HD 505 Copper open-back headphones are available now from Sennheiser and Amazon.com and priced at $249.95 / £229.99 / €279,90.
Wearing style: Circumaural.
Drivers: Dynamic, open-back.
Ear pad material: Velour.
Frequency response: 12Hz–38.5kHz.
Impedance: 120Ω.
Sound pressure level (SPL): 107.9dB (1kHz / 1Vrms).
THD, total harmonic distortion: <0.2 % (1kHz / 90dB SPL).
Weight (w/o cable): 237g.
Cable: 1.8m cable with 3.5 mm jack plug, detachable, left side.

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