Sennheiser HD 550 Headphones
- Free Mainland UK Shipping on orders over £100
- Official Hi-Fi Retailer since 1973
- Usually in stock and dispatched in 1-5 working days
We offer free delivery on all orders over £100 to mainland UK. Orders under £100 are subject to a £5 shipping charge.
Delivery is available across mainland UK. If you are located outside mainland UK and would like a shipping quote, please get in touch before placing your order.
We aim to dispatch in-stock items as soon as possible provided that we physically have the stock - but please note that sometimes we have to order from our supplier for certain products, in which case delivery should take place within 1-5 working days of the order being placed.
Tracking details or estimated delivery timescales will be provided once your order has been processed. If there are any delays due to stock availability, we will contact you as soon as possible with the option to wait or receive a full refund.
Please note that certain products may be subject to specific distance selling or delivery regulations. If you are unsure about a product or its delivery terms, we recommend contacting us before purchase.
You can cancel your order within 14 days of receiving your goods, in line with UK distance selling regulations. Once you’ve notified us, you have a further 14 days to return the item. Please contact us by email, phone or in writing before sending anything back.
Items must be returned in original condition and packaging, including all accessories, manuals and any promotional items. The cost of return is your responsibility and we strongly recommend insuring the goods, as refunds cannot be issued for damaged or incomplete returns. If items show excessive handling, are missing components, or cannot be resold as new, a reasonable deduction may be made.
Please note that used headphones (for hygiene reasons) and custom or special-order items cannot be returned. If you need assistance arranging a return, we’re always happy to help.
HD 550
The new HD 550 brings a compelling new choice to audiophiles and gamers seeking next-level capability that outshines its price tag.
A Deeper Audiophile Experience
The heart of the HD 550 is its custom 38mm transducer, made at Sennheiser’s audiophile production facility in Tullamore, Ireland. Its speedy performance yields exceptional clarity from 6 Hz to 39.5 kHz, all while producing less than 0.2% total harmonic distortion. At 150 ohms, it’s an ideal match for a wide variety of hi-fi gear, scaling with ease when paired with premium audio gear such as Sennheiser’s own HDV 820.
The fully open-back design utilizes a new acoustic mesh that protects the transducers while removing any remaining barriers between the listener and their music. Their angled arrangement creates an expansive soundstage that drops the listener into the epicenter of the recording. Gamers will experience superb, lag-free spatial awareness and immersion for both competitive and casual sessions. True to the Sennheiser brand’s heritage, the HD 550 delivers punchy bass, crystal-clear transients, and neutral mids without straying from the truthful voicing that audiophiles prefer.
Built for Comfort
Situated in chassis renowned for its long-term comfort, the HD 550 features a more relaxed clamping force compared to other 500-series stablemates. Weighing less than the most popular gaming controllers at a mere 237 grams [8.4 oz], the HD 550 practically disappears on the head. A soft-touch textured headband and ventilated metal mesh earcup covers keep the listener comfortable without sacrificing durability.
Like other models in the 500 series, the HD 550 features a modular design, allowing for easy swapping of cables and earpads. It ships with a 1.8 m cable terminating with a stereo 3.5 mm jack plug with a 6.35 mm adapter, making it compatible with a wide range of devices. A range of additional cables—sold separately—makes it easy for listeners to adapt to balanced sources and mic-enabled jacks, for example.
| Wearing style | Wired headband |
| Ear coupling | Over-ear (Circumaural) |
| Acoustic principle | Open-back |
| Ear cushions material | Synthetic velour |
| Transducer principle | Electrodynamic (moving coil) |
| Frequency response | 6 Hz – 39.5 kHz |
| Sound pressure level (SPL) | 106.7 dB (1 kHz / 1 Vrms) |
| Impedance | 150 Ω |
| Total Harmonic Distortion (THD) | ) <0.2 % (1 kHz / 90 dB SPL |
| Magnetic field strength | 21 mT |
| Weight (w/o cable) | 237g |
| Audio cable | 1.80 m cable with 3.5 mm plug, detachable, left side |
| Audio adapter | 3.5 mm to 6.35 mm jack adapter, screw-on type |
