vs
9.3Sound9.6
3.1Noise control & calls7.2
9.6Battery4.6
Why is STAX Spirit S3 better than FreeBuds Pro 2?
- Battery life80 h vs 7 h11.4×
- Driver size89 mm vs 11 mm8.1×
- Battery capacity1,500 mAh vs 55 mAh27.3×
- aptXYes · FreeBuds Pro 2: No
Why is FreeBuds Pro 2 better than STAX Spirit S3?
- Active noise cancellingNo · STAX Spirit S3: Yes
- LDACNo · STAX Spirit S3: Yes
- Lowest frequency20 Hz vs 14 Hz+43%
- Highest frequency40,000 Hz vs 48,000 Hz+20%
Specifications
Side by side
| Sound | ||
| Fit | Over-ear | In-ear |
| Ear cup design | — | Closed-back |
| Driver type | Planar magnetic | Dynamic |
| Driver size | 89 mm | 11 mm |
| Number of drivers | — | 2 |
| Lowest frequency | 20 Hz | 14 Hz |
| Highest frequency | 40,000 Hz | 48,000 Hz |
| Impedance | 24 Ω | — |
| Sensitivity | 94 dB | — |
| Hi-Res Audio | Yes | Yes |
| Adjustable equaliser | Yes | Yes |
| Noise control | ||
| Active noise cancelling | No | Yes |
| Transparency / ambient mode | — | Yes |
| Battery & charging | ||
| Battery life | 80 h | 7 h |
| Battery life with ANC | — | 4 h |
| Total with charging case | — | 30 h |
| Battery capacity | 1,500 mAh | 55 mAh |
| Charging time | 1.5 h | 1.5 h |
| Quick charge (claimed) | 10 min → 11 h | — |
| Fast charging support | Yes | — |
| Wireless charging (case) | — | Yes |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.2 |
| Bluetooth codecs | aptX Adaptive, aptX, SBC | LDAC, AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | Yes |
| aptX | Yes | No |
| LDAC | No | Yes |
| Multipoint (two devices) | Yes | Yes |
| USB-C | Yes | Yes |
| 3.5 mm jack / AUX | Yes | — |
| Design & build | ||
| Weight | 329 g | — |
| Protection rating | — | IP54 |
| Water resistance (IPx) | — | IPx4 |
| Dust protection (IP) | — | 5 |
| Colours | Black | — |
| Features | ||
| Touch controls | — | Yes |
| Hands-free calls | Yes | Yes |
