Simolio SM-904
Sennheiser HDB 630
What Buyers Say
Simolio SM-904
These headphones are a hit with parents and kids alike, praised for their durability, comfort, and sound quality. Many users report they last far longer than other brands, even with rough use by children. A few minor issues like a greasy box or occasional connectivity hiccups are noted, but overall satisfaction is high.
Pros
- Durable build
- Comfortable fit
- Great sound quality
- Volume limiter
- Good microphone
Cons
- Greasy box upon arrival
- Occasional connectivity issues
- Unclear speaker test method
Sennheiser HDB 630
The Sennheiser HDB 630 headphones are praised for their exceptional sound quality, delivering a clean, neutral, and detailed audio experience that rivals wired audiophile setups. Users highlight excellent comfort for long sessions, impressive battery life, and useful features like parametric EQ and crossfeed. While the ANC is decent but not class-leading, and the touch controls can be finicky, the overall sentiment is very positive, with many considering them a top choice for serious listeners.
Pros
- Exceptional sound quality
- Excellent comfort for long sessions
- Impressive battery life
- Useful parametric EQ and crossfeed
- Good build quality
Cons
- ANC not class-leading
- Touch controls can be finicky
- Plasticky build feel
- Plain aesthetics
- Double-tap ANC/transparency UX issue
Scores
Specifications
| Simolio SM-904 | Sennheiser HDB 630 | |
|---|---|---|
| Design | ||
| Form Factor | over-ear | over-ear |
| Open/Closed | closed | closed |
| Foldable | ✓ | ✓ |
| Weight | 0.26 kg★ | 0.31 kg |
| Ear Cushion | ultra-soft ear cushions | synthetic leatherette |
| Headband | memory stainless steel | Japanese leatherette |
| Audio | ||
| Driver Type | dynamic | dynamic |
| Driver Size | — | 42 mm★ |
| Drivers | 2★ | 1 |
| Freq Min | — | 6 Hz★ |
| Freq Max | — | 40 kHz★ |
| Impedance | 32 Ω | 480 Ω |
| Sensitivity | — | 105 dB★ |
| Hi-Res Audio | — | ✓★ |
| Codecs | SIMOLIO Kids Wired Headphones with Microphone, Boys Headphone with Volume Limiter & Share Jack, Headset with Cord for School, Laptop, Tablet, PC, Airplane, Teens, Adults (Black) | aptX HD, aptX Adaptive |
| Surround | SIMOLIO Kids Wired Headphones with Microphone, Boys Headphone with Volume Limiter & Share Jack, Headset with Cord for School, Laptop, Tablet, PC, Airplane, Teens, Adults (Black) | SIMOLIO Kids Wired H | Sennheiser HDB 630 Wireless Over-Ear Headphones - Hi-Res Audiophile Sound, Adaptive Noise Cancellation, Parametric EQ, 60 Hour Battery Life, Includes USB-C Low-Latency Bluetooth Adapter - Black | Senn |
| Noise Control | ||
| ANC | ✗ | ✓★ |
| ANC Type | — | hybrid adaptive |
| Transparency | — | ✓★ |
| Connectivity | ||
| Wireless | ✗ | ✓★ |
| Bluetooth | — | 5.2★ |
| Profiles | — | A2DP, AVRCP, HFP |
| Multipoint | — | ✓★ |
| Wired Connector | 3.5mm | USB-C |
| Detachable Cable | ✗ | ✓★ |
| Cable Length | 1.5 m | 1.2000000476837158 m |
| Battery | ||
| Battery Life | — | 60 hrs★ |
| Charge Time | — | 2 hrs★ |
| Fast Charging | — | 10 min for 7 hours playback |
| Charging | — | USB-C★ |
| Capacity | — | 700 mAh★ |
| Microphone | ||
| Microphone | ✓ | ✓ |
| Mic Count | — | 4★ |
| NC Mic | ✓ | ✓ |
| Boom Mic | ✗ | ✗ |
| Detachable Mic | ✗ | ✗ |
| Mic Pattern | Unidirectional | — |
| Features | ||
| Voice Assistant | — | voice assistant |
| Touch Controls | ✗ | ✓★ |
| App | — | Sennheiser Sound Control Plus |
| Volume Limiting | ✓★ | ✗ |
| Gaming Mode | ✓ | ✓ |
Pros & Cons
Simolio SM-904
- Strong build (91st percentile)91st %ile
- Strong social proof (90th percentile)90th %ile
- Strong comfort (77th percentile)
- Strong user sentiment (72nd percentile)
- Below average anc (32nd percentile)
Sennheiser HDB 630
- Strong connectivity (98th percentile)98th %ile
- Strong anc (98th percentile)98th %ile
- Strong sound (98th percentile)98th %ile
- Strong social proof (95th percentile)95th %ile
Pricing
Simolio SM-904 offers 14.3x better value for money
Verdict
Scores 100 overall, wins 7 of 7 usage categories and 17 of 42 specs.
