Over-Ear
AKG K 550
68Good
$249
Full review dataAKG K 550 vs Sennheiser HD 650: which should you buy?
On aggregated review scores the Sennheiser HD 650 comes out ahead with an HearWiki score of 85. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: Sennheiser HD 650 - Outstanding overall at around $380.
Over-Ear
Sennheiser HD 650
85Outstanding
$380
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
AKG K 550
Sound7.5
Value6.5
Sennheiser HD 650
Sound9.0
Value7.5
Specifications
| Spec | AKG K 550 | Sennheiser HD 650 |
|---|---|---|
| Type | Over-Ear | Over-Ear |
| Price (USD) | $249 | $380 |
| HearWiki score | 68 / 100 · Good | 85 / 100 · Outstanding |
| Released | 2018 | - |
| Audio | ||
| Driver | 50mm | dynamic |
| Driver size | 50 mm | 42 mm |
| Drivers per side | 1 | 2 |
| Frequency response | 12Hz-28kHz | 10Hz-41kHz |
| Impedance | 32 Ω | 300 Ω |
| Sensitivity | 99 dB/mW | 99.8 dB/mW |
| Sensitivity (dB/Vrms) | - | 103 |
| Wireless | ||
| Multipoint pairing | No | No |
| Features | ||
| Active noise cancelling | No | No |
| Controls | - | buttons |
| Design | ||
| Weight | 305 g | 260 g |
| Foldable | Yes | No |
| Detachable cable | No | Yes |
| USB-C | No | No |
| Balanced connection | - | Yes |
What reviewers said
AKG K 550
The AKG K 550 is a sizable wired over-ear model that aims for accuracy and openness despite its closed-back design, delivering a spacious soundstage and clear vocals. It offers a comfortable fit and solid construction, though its bass response can be inconsistent depending on how well it seals around the ears. It's a decent choice for home listening, but its value is debated due to some tonal quirks and fit sensitivity.
- Pro:Spacious and detailed sound for a closed-back design
- Pro:Comfortable over-ear fit with sturdy build
- Pro:Clear vocal reproduction and strong bass when sealed properly
- Con:Bass can be weak if the ear seal is imperfect
- Con:Minor treble irregularities may bother sensitive listeners
- Con:Non-detachable cable limits replacement options
Sennheiser HD 650
The Sennheiser HD 650 is a wired, open-back dynamic headphone built for serious home listening. It delivers a natural, detailed sound with a comfortable fit, though its sub-bass rolloff and bulky design limit it to stationary use rather than portable or active scenarios. Its replaceable cable and balanced connection option add to its appeal for audiophiles.
- Pro:Excellent clarity and natural tonal balance
- Pro:Very comfortable for long listening sessions
- Pro:Detachable cable and balanced output support
- Con:Noticeable sub-bass rolloff
- Con:Not portable or suitable for active use
- Con:High impedance requires a dedicated amplifier
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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