Sony ULT FIELD 1 vs Sony ULT FIELD 3

Every spec side by side, from each maker's published figures.

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ULT FIELD 1 compared with ULT FIELD 3

	SonyULT FIELD 1	SonyULT FIELD 3
Overview
Released
Released	April 2024	April 2025
Sound
Type
Type	Portable speaker	Portable speaker
Dolby Atmos
Dolby Atmos	No	No
Drivers
Drivers	One woofer (about 83 × 42 mm) and one tweeter (about 16 mm), with a passive radiator	One woofer (about 86 × 46 mm) and one tweeter (about 20 mm), with side passive radiators
Room tuning
Room tuning	ULT button for ULT POWER SOUND bass boost (on or off); 3-band custom equaliser in the app	ULT button for ULT POWER SOUND bass boost (on or off); Sound Field Optimization; 7-band custom equaliser in the app
Connections
Wi-Fi
Wi-Fi	No	No
Bluetooth
Bluetooth	Yes	Yes
AirPlay
AirPlay	No	No
Voice assistants
Voice assistants	None	None
Bluetooth
Bluetooth	Bluetooth 5.3; SBC and AAC; A2DP, AVRCP, HFP, HSP and SPP	Bluetooth 5.2; SBC and AAC; A2DP, AVRCP, HFP, HSP and SPP; multipoint connection to two devices; Google Fast Pair
Ports
Ports	USB-C for charging only	USB-C for charging in and out (can charge a phone at 5 V, up to 1.5 A); not for audio
Multi-room
Multi-room	Stereo Pair with a second ULT FIELD 1 (switches to SBC)	Stereo Pair with a second ULT FIELD 3; Party Connect with compatible Sony speakers
App
App	Sony | Music Center	Sony | Sound Connect
Design
Battery life (maker's claim)
Battery life (maker's claim)	Up to 12 hours	Up to 24 hours
Water and dust resistance
Water and dust resistance	IP67	IP67
Weight
Weight	0.65 kg (better)	1.2 kg
Battery life detail
Battery life detail	About 12 hours at volume 25 of 50 with ULT POWER SOUND on; about 3 hours at maximum volume; about 5 hours to charge with a 1.5 A USB adaptor (faster with 3 A); STAMINA mode turns sound effects off to extend battery life	About 24 hours at volume 22 of 50 with ULT POWER SOUND on; about 5 hours at maximum volume; about 3.5 hours to charge with a 9 V 3 A USB PD adaptor; 10 minutes of charging gives about 120 minutes of playback; Battery Care mode limits charge to about 90%; STAMINA mode for longer playback
Controls
Controls	Buttons for power, Bluetooth, play/call, volume and ULT	Buttons for power, Bluetooth/Stereo Pair, CONNECT (Party Connect), play/call, volume and ULT; battery and Battery Care button behind the cap
Microphones
Microphones	Built-in omnidirectional microphone with echo cancelling for hands-free calls	Built-in omnidirectional MEMS microphone for hands-free calls
Mounting
Mounting	Multi-way strap; works standing on its end or lying on its side	Detachable shoulder strap
Size
Size	206 × 77 × 76 mm (W × H × D)	256 × 113 × 79 mm (W × H × D)
Colours
Colours	Black, Off White, Forest Grey, Orange	Black, Off White, Forest Grey
In the box
In the box	Speaker (with strap), USB-C cable (USB-A to USB-C)	Speaker, shoulder strap, USB-C to USB-C cable