The Sennheiser HD 550 is a 237g open-back headphone with angled 150-ohm dynamic drivers and a tuning that leans neutral and spacious. Sensitive enough for a decent dongle DAC, it suits long desk sessions, mixing reference and critical listening in a quiet room.
Who the Sennheiser HD 550 is for
Long desk sessions: At 237g and built for long sessions, it's made for listening where comfort matters as much as tone.
Reference listening: A tuning that leans neutral and spacious suits mixing reference and general critical listening.
Dongle DAC owners: It's sensitive enough that a decent dongle DAC drives it properly — no desktop amp required to get it to volume.
Skip it if: you need an office or commuter headphone — like any open-back, the HD 550 leaks sound in both directions.
Sennheiser HD 550 key specs
Design: Open-back
Driver: Angled dynamic
Impedance: 150 Ohm
Weight: 237g
Drive requirements: Runs well from a quality dongle DAC; no desktop amp required
Genuine Sennheiser stock. Free shipping on every order, 45-day returns, 1-year warranty.
Sennheiser HD 550 vs similar options
vs Aune AR5000: Aune's open-back uses a 50mm MLD dynamic driver at 28 ohms and 108dB in a 350g suspension-headband build; the HD 550 is the lighter pick at 237g, with angled drivers.
vs Sennheiser HD 650: Sennheiser's 300-ohm open-back is meant to pair with a proper headphone amplifier; the HD 550's 150-ohm drivers are sensitive enough for a quality dongle DAC.
vs FiiO FT3 32Ω: FiiO's 60mm open-back in its 32Ω version is tuned for warmer, fuller bass and includes 3.5mm, 4.4mm and 6.35mm terminations; choose the HD 550 for a neutral-leaning sound.
Yes. Every unit we sell is genuine and brand-new, shipped in its original packaging, and backed by our 1-year TonePier warranty and 45-day returns.
Where does my order ship from, and how long does it take?
Every order ships from our warehouse in China, with full tracking, and most orders ship within 3 business days. Shipping is free on every order; most US orders arrive within 7–15 business days and most orders to other countries within 7–20 business days — see our shipping policy for details.
What if it isn't for me?
You get 45 days to decide. Keep the packaging, keep it in like-new condition, and send it back for a refund. Ear tips unsealed for hygiene reasons are fine — we expect you to actually listen.
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