Sennheiser HD 660S2 vs Sony WH-1000XM5
Side-by-side comparison based on Reddit community data

#1 in Headphones
Sennheiser
Sennheiser HD 660S2
$419.99
75/100Good
75% positive17% neutral8% negative
Pros
- +Preferred sound/experience over sony ier-m9
- +Superior sound quality
- +Worth the investment
- +Neutral sounding (benchmark)
- +More bassy with eq
Cons
- -Ranked too high compared to better headphones
- -Expensive
- -Mids more in the background with eq
- -Soundstage inferior to speakers
โAfter buying the HD660S2, none of the IEMs beat its quality of sound, even the most expensive ones, so headphones it is.โ

#6 in Headphones
Sony
Sony WH-1000XM5
$248.00
67/100Average
67% positive33% neutral0% negative
Pros
- +Good sound stage
- +Can hear different instruments in space
- +Good for general use
Cons
- -Discussed more for controversy than quality
โI've just discovered what a 'sound stage' is and how you can actually hear different instruments in different places in space. And bear in mind these are WH-1000XM4โ
Specifications Comparison
| Spec | Sennheiser HD 660S2 | Sony WH-1000XM5 |
|---|---|---|
| Driver | 42mm | 30mm |
| Frequency Response | 8Hzโ41.5kHz | 4Hzโ40kHz |
| Impedance | 300ฮฉ | โ |
| Type | Open-back | โ |
| Weight | 260g | 250g |
| Connectivity | 6.35mm + 4.4mm balanced | Bluetooth 5.2, 3.5mm |
| Noise Cancelling | No | Yes (Adaptive) |
| Battery Life | โ | 30 hours |
| Codec Support | โ | LDAC, AAC, SBC |
| Price | $419.99 | $248.00 |
| Reddit Sentiment | 75% positive | 67% positive |
| Reddit Mentions | 12 | 3 |