Bowers & Wilkins Pi8 vs Anker soundcore Liberty 4 Pro

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Pi8 compared with Liberty 4 Pro

	Bowers & WilkinsPi8	Anker soundcoreLiberty 4 Pro
Overview
Released
Released	August 2024	October 2024
Sound
Type
Type	In-ear	In-ear
Noise cancelling
Noise cancelling	Yes	Yes
Transparency mode
Transparency mode	Yes	Yes
Spatial audio with head tracking
Spatial audio with head tracking	–	Yes
Driver size
Driver size	12 mm	10.5 mm
Bluetooth codecs
Bluetooth codecs	SBC, AAC, aptX, aptX Adaptive and aptX Lossless	SBC, AAC and LDAC
Drivers
Drivers	12 mm Carbon Cone dynamic drivers with dedicated DSP, amplifier and DAC	10.5 mm and 4.6 mm drivers with digital crossover
Noise cancelling detail
Noise cancelling detail	Noise cancelling and ambient Pass-Through modes; a seal in the ear canal is needed for the strongest reduction; wear sensors pause playback when an earbud is removed	Six microphones and an air-pressure sensor; cancellation adjustable in the app or case
Audio features
Audio features	aptX Lossless and aptX Adaptive on compatible source devices; five-band customisable EQ and TrueSound mode in the Bowers & Wilkins Music app; case retransmits over aptX Adaptive	HearID 4.0; fixed and head-tracking spatial audio. SBC, AAC and LDAC confirmed by SoundGuys and Tom's Guide
Hearing health
Hearing health	–	Optional Safe Volume limit
Battery
Listening time (maker's claim)
Listening time (maker's claim)	Up to 6.5 hours	Up to 7.5 hours
With the case
With the case	Up to 20 hours	Up to 30 hours
Wireless charging
Wireless charging	Yes	Yes
Battery life detail
Battery life detail	Up to 6.5 hours per charge with ANC on and an additional 13.5 hours from the case, based on Bowers & Wilkins' pre-production tests	ANC or Transparency gives 7.5 hours, 30 including the case; Normal gives ten and 40. SoundGuys measured 5 hours 42 minutes with ANC and dates release to 3 October 2024
Charging case
Charging case	Can retransmit audio from USB-C and 3.5 mm analogue sources to the earbuds; USB-C and wireless charging; 65 × 29 × 52 mm	USB-C or wireless; buds recharge in 1.5 hours, case in 2.5 by cable or 3.5 wirelessly; display with separate touch bar
Fast charging
Fast charging	15 minutes of charging gives up to 2 hours of playback; listed charging time 2 hours	Five minutes provides up to four hours
Design
Weight (each earbud)
Weight (each earbud)	7 g	5.5 g (better)
Water and sweat resistance
Water and sweat resistance	IP54	IPX5
Bluetooth
Bluetooth	5.4	5.3
Two devices at once
Two devices at once	Yes	Yes
Controls
Controls	Touch-sensitive multi-function button on each earbud; hold the left button to switch between ANC and Pass-Through; controls can be customised in the Music app	Pinch stems for playback and calls; slide for volume; configurable in the app
Microphones
Microphones	Three microphones per earbud for calls and noise cancelling	–
Fit and ear tips
Fit and ear tips	Silicone ear tips in extra-small, small, medium and large sizes (medium fitted)	Silicone tips and app Fit Test
Case weight
Case weight	46 g	51 g (SoundGuys)
Dimensions
Dimensions	–	Buds 25 × 32 × 22 mm; case 65 × 62 × 30 mm (SoundGuys)
Water resistance detail
Water resistance detail	–	IPX5 for earbuds; maker spec takes precedence over an unlabelled comparison column showing IP55
Works with
Works with	Bluetooth audio with phones, tablets and computers; Bowers & Wilkins Music app on iOS and Android; Apple MFi; multipoint connection to two devices	Either bud works independently; soundcore app for Android and iOS
Colours
Colours	Anthracite Black, Dove White, Jade Green, Midnight Blue, Dark Burgundy and Pale Mauve	–
In the box
In the box	Earbuds, charging case, four sizes of ear tips, 60 cm USB-C to USB-C charging cable, 80 cm USB-C to 3.5 mm audio cable and documentation	–