Short answer: the Sennheiser HDB 630. It ranks #250 of 429 over-ear headphones by sound quality, rated 3.3/5, at $489.95. The Sony WH-1000XM6 ranks #386, rated 2.3/5, at $458, $31.95 cheaper, which does not close the gap in sound quality.
The Sennheiser HDB 630 is the better-sounding pick. Bass sits close to target and holds down to 20 Hz, so low end sounds full without bloat. The catch: Treble sits about 4.5 dB low, so it sounds a little dark.
What the Sony WH-1000XM6 does well: Active noise cancelling, up to 30 hours of battery with ANC on (40 with it off) and LDAC, AAC and LC3 support cover most wireless needs, and a cable can be used too. Watch for: An 11.5 dB dip near 8.1 kHz and treble about 3 dB under target leave cymbals and detail muted, so the sound is dark and heavy rather than balanced, with a preference score of only 43.
Buy the Sennheiser HDB 630. It is rated higher for sound quality, and the $31.95 saving on the Sony WH-1000XM6 is not enough to make up the difference.
Want more options? Browse the full Headphones rankings.
Specifications Side By Side
| Sennheiser HDB 630 | Sony WH-1000XM6 | |
|---|---|---|
| Price | $489.95 | $458.00 |
| Ranked | #250 of 429 in Over-Ear Headphones | #386 of 429 in Over-Ear Headphones |
| Form Factor | Over-ear | Over-ear |
| Back | Closed | Closed |
| Connection | Bluetooth | Wireless and wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 42mm dynamic | 1 x 30mm dynamic |
| Frequency Response | 6Hz - 40kHz | 4Hz - 40kHz (Manufacturer specified) |
| Weight | 0.7 lbs (311 g) | 0.6 lbs (254 g) |
| Harman Preference Score | 67 (median of 7 squig.link measurements, calibrated to AutoEQ) | 43 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.37 dB standard deviation | 3.41 dB standard deviation |
| Tonal Tilt | -1.11 (negative is warmer, positive brighter) | -1.83 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.6 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+7.1 dB at 30 Hz) |
| Impedance | - | 48 ohms |
| Sensitivity | - | 103 dB/mW |
| Active Noise Cancelling | - | Yes |
| Battery Life | - | 30 hours (40 with ANC off, Manufacturer specified) |
| Bluetooth Version | - | 5.3 |
| Bluetooth Codecs | - | SBC, AAC, LDAC, LC3 |
| Built-in Microphone | - | Yes |
Related Headphone Comparisons
More worthwhile head-to-heads for Sennheiser HDB 630:
- Apple AirPods Max vs Sennheiser HDB 630
- Apple AirPods Max vs Sony WH-1000XM6
- Bowers & Wilkins Px8 vs Sony WH-1000XM6
- Bose QuietComfort 35 II vs Sony WH-1000XM6
- Sennheiser Momentum 4 Wireless vs Sony WH-1000XM6
Prices on this page were last checked October 13, 2026 at 3:17 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Headphones In Full
Sennheiser HDB 630: $489.95 Amazon $489.95 eBay
Pros: Bass sits close to target and holds down to 20 Hz, so low end sounds full without bloat. Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural. It uses 1 x 42mm dynamic.
Cons: Treble sits about 4.5 dB low, so it sounds a little dark.
Full Sennheiser HDB 630 review and specifications →
| Released | Oct 2025 (1 year ago) |
|---|---|
| Back | Closed |
| Connection | Bluetooth |
| Deviation From Target | 2.37 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 42mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 6Hz - 40kHz |
| Harman Preference Score | 67 (median of 7 squig.link measurements, calibrated to AutoEQ) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.6 dB at 30 Hz) |
| Tonal Tilt | -1.11 (negative is warmer, positive brighter) |
| Weight | 0.7 lbs (311 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Sony WH-1000XM6: $458.00 Wireless Amazon $458.00 Lowest Sony $459.99 eBay
Older models: the Sony MDR-1000X (ranked higher, rated 3.9/5), the Sony WH-1000XM2 (ranked higher, rated 3.7/5), the Sony WH-1000XM5 (ranked higher, rated 2.6/5), the Sony WH-1000XM4 (ranked higher, rated 2.5/5) and the Sony WH-1000XM3 (ranked lower, rated 1.8/5). See every Sony WH-1000X generation.
Pros: Active noise cancelling, up to 30 hours of battery with ANC on (40 with it off) and LDAC, AAC and LC3 support cover most wireless needs, and a cable can be used too. The tuning suits bass lovers: in hobbyist measurements on squig.link sub-bass sits about 7.5 dB and mid-bass about 6 dB above target, giving films and electronic music plenty of weight. At 48 ohms and 103 dB/mW it also runs easily from a phone in wired mode, and it rates above the Sony INZONE H9 II.
Cons: An 11.5 dB dip near 8.1 kHz and treble about 3 dB under target leave cymbals and detail muted, so the sound is dark and heavy rather than balanced, with a preference score of only 43. The Sennheiser Momentum 4 Wireless rates higher and costs less.
Full Sony WH-1000XM6 review and specifications →
| Released | May 2025 (1 year ago) |
|---|---|
| Active Noise Cancelling | Yes |
| Back | Closed |
| Battery Life | 30 hours (40 with ANC off, Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC, LC3 |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Connection | Wireless and wired |
| Deviation From Target | 3.41 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 30mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 4Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 43 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 48 ohms |
| Sensitivity | 103 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+7.1 dB at 30 Hz) |
| Tonal Tilt | -1.83 (negative is warmer, positive brighter) |
| Weight | 0.6 lbs (254 g) |
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- Reviews, Comparisons and Sound Samples
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