Sennheiser HD550 Open Back Headphones
Sennheiser - HD550 Open Back Headphones, inc Adapter and Drawstring Bag
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Open-Back Headphones
Sennheiser- HD 550
'Discover the details you’ve been missing'Looking to upgrade your daily listening or gaming
experience? Maybe you want to discover more
details in your favorite tracks or stay hyperaware
in the gaming arena with zero latency (and no
charging required). Perhaps you just like to look
uncommonly stylish in the privacy of your own
home. In any case, if you’re seeking audiophilegrade sound at an affordable price, the HD 550 is
for you.
'Your media is keeping secrets'No, not an encoded bitcoin key or Banksy’s real name — sonic secrets: the faint inhale of a singer, a fretboard squeak, whispered background vocals buried deep in the mix, faraway footsteps in an online game. The HD 550 headphones are your cheat code to hear them all — in brilliant detail and lifelike presence. And you don’t need a roomful of expensive equipment to access the experience.
150 ΩImpedance
6Hz – 39.5kHzFrequency response
106.7 dBMax SPL
at a glance
• Ideal for critical music listening, watching movies, remote work, and gaming — with microphone-ready design
• 150-ohm transducer (made by us in Ireland) for open, natural sound from 6 Hz to 39.5 kHz
• Enjoy extra comfort from gently soft ear cushions and headband
• Open-back headphones with high-grade metal mesh earcup covers
• Built to last, with replacement parts available
what's included?
• HD 550 Open-Back Headphones
• 1.80 m cable with 3.5 mm plug
• 3.5 to 6.35 mm screw-on jack adapter
• Drawstring bag
'A New World of Detail and Precision'
right in the middle of the actionLots of mainstream audio products give you “bathtub” sound. They call it that because the frequency response curve is shaped like a bathtub. We like a nice soak as much as the next person, but with bathtub sound you’re drowning in bass and treble, vocals are weak, and certain frequencies resonate too loudly.
The HD 550 is the opposite — no gaps, peaks, or loofahs here. That means instruments don’t get “lost in the mix”. You can hear everything, and clearly. Deep sub bass reproduces frequencies you feel more than hear. Treble extends far beyond human hearing. Then there’s “soundstage”. Basically, high-end headphones make it feel like each sound is coming from a specific location. Not just left, right, or center, but also near and far, in front or behind you. Your ears do this 3D thing in real life, too. And with the right headphones, it works with recordings, games, and soundtracks.
'Pure, Unadulterated Sound'
'What acoustic sorcery is this?!'Many modern headphones rely on electronics to achieve the desired sound. The HD 550, however, will have none of this: you get a direct analog signal path from source to ear. That means pure, unadulterated sound without additional noise or artifacts. This did put our engineers on the spot though: it meant the headphones had to be acoustically flawless.
They started with our excellent 150-ohm transducer inside the proven HD 500 chassis. We manufacture the transducer ourselves in Ireland, by the way, so you get outstanding quality and perfect channel matching. To create that 3D sound and wide soundstage, the transducers angle back towards the ears, mimicking real-life hearing. The dust cover is acoustically transparent. Even the ear cushion materials were selected for their acoustic properties. And a strategic bit of foam ensures smooth treble integration and controlled bass. The result is a neutral balance even our most demanding fans will appreciate. Open and airy, but never harsh, the HD 550 headphones are smooth enough to be anyone’s daily driver.
Diving Deep Into The Tech Specs
'solid, satisfying bass response, balanced midrange, and precise and airy treble'Headphone frequency response graphs look very different from those for loudspeakers, which are ideally very flat. Here you can see a big rise on the right (treble) side and then it falls off a cliff. But this is in fact very close to what’s considered ideal for headphones. Because leading manufacturers base their goals on extensive psychoacoustic research about listeners’ subjective preferences.
For instance, it turns out that headphones negate the function of the outer ear, which otherwise amplifies sounds in the 3 kHz region. So, the ideal response for headphones is much higher there. Resonances in the inner ear also make sounds between 7 and 10 kHz louder, which is why the graph dips abruptly around 8-9 kHz. We can see here that the HD 550 builds on the already excellent characteristics of the HD 599, extending even further into subbass territory while still offering strong, analytic mids and brilliant treble without sibilance or harshness. The graph reflects the HD 550’s solid, satisfying bass response, balanced midrange, and precise and airy treble.
HD 550 Audiophile Headphones | Sennheiser
The Tech Spec
| Features | Specification | Cable length | 1.8 m |
|---|---|
| Ear coupling | Over ear |
| Ear pad material | Synthetic velour |
| Frequency response | 6 Hz – 39.5 kHz |
| Nominal impedance | 150 Ω |
| Sound pressure level (SPL) | 106.7 dB / 1 V RMS |
| THD, total harmonic distortion | <0.2% (1kHz / 90 dB SPL) |
| Transducer principle (headphones) | dynamic, open |
