vs
7.2Noise control & calls9.3
4.6Battery7.1
3.9Build & features6.8
Why is FreeBuds Pro 4 better than Sleep A30?
- Hi-res codec (LDAC / aptX HD / LHDC)Yes · Sleep A30: No
- Highest frequency48,000 Hz vs 20,000 Hz2.4×
- Driver size11 mm vs 4.6 mm2.4×
- LDACYes · Sleep A30: No
- Lowest frequency14 Hz vs 20 Hz+43%
Why is Sleep A30 better than FreeBuds Pro 4?
- Battery life7 h vs 9 h+29%
- Total with charging case33 h vs 45 h+36%
- Battery life with ANC5 h vs 6 h+20%
- Earbud weight (each)5.8 g vs 3 g+93%
- Bluetooth version5.2 vs 5.4+4%
- Charging time2.5 h vs 1.5 h+67%
Specifications
Side by side
| Sound | ||
| Fit | In-ear | In-ear |
| Ear cup design | Closed-back | Closed-back |
| Driver type | Planar magnetic | Dynamic |
| Driver size | 11 mm | 4.6 mm |
| Number of drivers | 2 | — |
| Lowest frequency | 14 Hz | 20 Hz |
| Highest frequency | 48,000 Hz | 20,000 Hz |
| Impedance | — | 14 Ω |
| Hi-Res Audio | Yes | — |
| Adjustable equaliser | Yes | — |
| Noise control | ||
| Active noise cancelling | Yes | Yes |
| Transparency / ambient mode | Yes | — |
| Battery & charging | ||
| Battery life | 7 h | 9 h |
| Battery life with ANC | 5 h | 6 h |
| Total with charging case | 33 h | 45 h |
| Battery capacity | 55 mAh | — |
| Charging time | 2.5 h | 1.5 h |
| Fast charging support | Yes | — |
| Wireless charging (case) | Yes | — |
| Connectivity | ||
| Wireless | Yes | Yes |
| Bluetooth version | 5.2 | 5.4 |
| Bluetooth codecs | LDAC, AAC, SBC | AAC, SBC |
| Hi-res codec (LDAC / aptX HD / LHDC) | Yes | No |
| aptX | No | No |
| LDAC | Yes | No |
| Multipoint (two devices) | Yes | — |
| USB-C | Yes | Yes |
| Smart & streaming | ||
| Companion app | — | Yes |
| Design & build | ||
| Earbud weight (each) | 5.8 g | 3 g |
| Protection rating | IP54 | IPX4 |
| Water resistance (IPx) | IPx4 | IPx4 |
| Dust protection (IP) | 5 | — |
| Colours | — | Mist Lilac Special, Lunar White Special, Moonlit White, Mist Green |
| Features | ||
| Touch controls | Yes | Yes |
| Hands-free calls | Yes | Yes |
