Sennheiser HD 660S2
Sennheiser
58 Overall Score
vs
Beyerdynamic Aventho 100
Beyerdynamic
89 Overall Score
What Buyers Say
Sennheiser HD 660S2
95 out of 100 low confidence 5 reviews
The Sennheiser HD 660S2 is praised as a significant upgrade over its predecessor, with improved bass and a warm, organic sound signature. Users highlight its excellent midrange realism, wide soundstage, and comfort, though they note it requires a dedicated amp and DAC to reach full potential. Overall, it is considered a top-tier choice for audiophiles seeking detailed, fatigue-free listening.
Pros
- Improved bass over predecessor
- Warm and organic sound signature
- Excellent midrange realism
- Wide soundstage
- Comfortable and lightweight
Cons
- Requires dedicated amp and DAC
- High impedance (300 ohms)
- Open-back design leaks sound
- Pricey investment
Sound quality 5
Bass improvement 3
Midrange realism 2
Soundstage 2
Comfort 2
Amp dac requirement 2
Beyerdynamic Aventho 100
No customer feedback yet
Scores
Budget
Commute
Music
Studio
Gaming
Work
Calls
Specifications
| Sennheiser HD 660S2 | Beyerdynamic Aventho 100 | |
|---|---|---|
| Design | ||
| Form Factor | over-ear | on-ear |
| Open/Closed | open | closed |
| Foldable | ✗ | ✓★ |
| Weight | 0.50 kg | 0.22 kg★ |
| Ear Cushion | velour | replaceable ear pads |
| Headband | Aluminum, Plastic, Steel | aluminum and durable textiles |
| Audio | ||
| Driver Type | dynamic | dynamic |
| Driver Size | 38 mm | 45 mm★ |
| Drivers | — | 1★ |
| Freq Min | 8 Hz★ | 20 Hz |
| Freq Max | 42 kHz★ | 22 kHz |
| Impedance | 300 Ω | 48 Ω |
| Sensitivity | 104 dB★ | — |
| Hi-Res Audio | — | ✓★ |
| Codecs | — | AAC, aptX, aptX Adaptive, aptX LL, SBC |
| Noise Control | ||
| ANC | ✗ | ✓★ |
| ANC Type | — | Adaptive |
| Transparency | — | ✓★ |
| Connectivity | ||
| Wireless | ✗ | ✓★ |
| Bluetooth | — | 5.4★ |
| Profiles | — | AVDTP 1.3, HFP 1.9, GAVDP 1.3, SPP 1.2, A2DP 1.4, AVRCP 1.6 |
| Multipoint | — | ✓★ |
| Wired Connector | 6.35mm | 3.5mm |
| Detachable Cable | ✓ | ✓ |
| Cable Length | 1.7999999523162842 m | — |
| Range | — | 15 m★ |
| Battery | ||
| Battery Life | — | 60 hrs★ |
| Charge Time | — | 1.5 hrs★ |
| Fast Charging | — | 15-minute charge for up to 15 hours of listening time |
| Charging | — | USB-C★ |
| Capacity | — | 630 mAh★ |
| Microphone | ||
| Microphone | — | ✓★ |
| Mic Count | — | 2★ |
| NC Mic | — | ✓★ |
| Boom Mic | ✗ | ✗ |
| Detachable Mic | — | ✗ |
| Features | ||
| Voice Assistant | — | Google Fast Pair |
| Touch Controls | — | ✗ |
| App | — | beyerdynamic app |
| Volume Limiting | — | ✗ |
| Gaming Mode | — | ✗ |
Pros & Cons
Sennheiser HD 660S2
- Strong user sentiment (100th percentile)100th %ile
- Strong build (94th percentile)94th %ile
- Strong social proof (93rd percentile)93rd %ile
- Strong sound (80th percentile)80th %ile
- Below average comfort (10th percentile)10th %ile
- Below average mic (15th percentile)15th %ile
- Below average anc (32nd percentile)
Beyerdynamic Aventho 100
- Strong anc (98th percentile)98th %ile
- Strong sound (98th percentile)98th %ile
- Strong connectivity (98th percentile)98th %ile
- Strong build (94th percentile)94th %ile
Pricing
Sennheiser HD 660S20.109score per dollar
vs
Beyerdynamic Aventho 1000.449score per dollar
Beyerdynamic Aventho 100 offers 4.1x better value for money
Verdict
Winner: Beyerdynamic Aventho 100
Scores 89 overall, wins 7 of 7 usage categories and 18 of 41 specs.
