SonoFlow HQ51
With a 100-hour battery, 45dB QuietMax dual-feed ANC, and LDAC hi-res wireless, the HQ51 prioritizes endurance and noise suppression. Grammy-winning engineer tuning and 40mm diamond-like drivers deliver balanced sound, while a 5-minute quick charge provides 10 more hours of playback. Best for commuters and travelers needing marathon listening and ANC on a budget, though the low 36.8/100 studio score rules out critical monitoring.
form factor over-ear
driver type dynamic
driver size mm 40
impedance ohms 32
Wireless Yes
active noise cancellation Yes
bluetooth version 5.4
battery life hours 100
54 Overall Score
No current retailer price
Snapshot
Pros & Cons
Pros
- Strong battery (98th percentile) 98th
- Strong sound (93rd percentile) 93rd
- Strong anc (80th percentile) 80th
- Strong social proof (76th percentile) 76th
Cons
- Below average comfort (6th percentile)
- Below average build (34th percentile)
The proof
Performance
Specifications
Full Specifications
Design
| Form Factor | over-ear |
| Weight | 0.5 kg / 1.2 lbs |
| Ear Cushion | protein leather |
Audio
| Driver Type | dynamic |
| Driver Size | 40 |
| Freq Max | 40000 |
| Impedance | 32 |
| Hi-Res Audio | Yes |
| Codecs | LDAC |
Noise Control
| ANC | Yes |
| ANC Type | dual-feed |
Connectivity
| Wireless | Yes |
| Bluetooth | 5.4 |
Battery
| Battery Life | 100 |
| Fast Charging | 5-minute charge for 10 hours playback |
Microphone
| Microphone | Yes |
| NC Mic | Yes |
vs Competition
| Spec | SonoFlow HQ51 | Sennheiser MOMENTUM 4 | Sony WH-1000XM6 | Technics EAH-A800 | JBL Tune 670NC | TOZO HT3 |
|---|---|---|---|---|---|---|
| Form Factor | over-ear | over-ear | over-ear | over-ear | on-ear | over-ear |
| Driver Type | dynamic | dynamic | dynamic | dynamic | dynamic | dynamic |
| Driver Size (mm) | 40 | 42 | 30 | 40 | 32 | 40 |
| Impedance Ohms | 32 | 60 | 48 | 34 | 32 | 16 |
| Wireless | true | true | true | true | true | true |
| Active Noise Cancellation | true | true | true | true | true | true |
| Open Closed Back | - | closed | closed | closed | closed | closed |
| Bluetooth Version | 5.4 | 5.2 | 5.3 | 5.2 | 5.3 | 6.0 |
| Battery Life Hours | 100 | 60 | 30 | 50 | 70 | 90 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Anc | Mic | Build | Sound | Battery | Comfort | Connectivity | Social Proof |
|---|---|---|---|---|---|---|---|---|
| SonoFlow HQ51 | 80.4 | 64.3 | 33.8 | 93.3 | 98.4 | 6.3 | 64.8 | 76.4 |
| Sennheiser MOMENTUM 4 Compare | 98.1 | 83.1 | 90.9 | 97.8 | 91.1 | 80 | 98.1 | 71.4 |
| Sony WH-1000XM6 Compare | 98.1 | 89.6 | 90.9 | 91 | 76.3 | 80 | 99.9 | 83 |
| Technics EAH-A800 Compare | 94.1 | 98.4 | 75.9 | 97.1 | 86.3 | 51.9 | 97.5 | 65.1 |
| JBL Tune 670NC Compare | 98.1 | 64.3 | 75.9 | 85 | 94.2 | 87.1 | 99.2 | 98.5 |
| TOZO HT3 Compare | 89.6 | 83.1 | 94.3 | 98.7 | 97.7 | 51.9 | 96.8 | 94.8 |
Price
Value & Pricing
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
