JBL Boombox 4 vs Sony ULT FIELD 5

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Boombox 4 compared with ULT FIELD 5

	JBLBoombox 4	SonyULT FIELD 5
Overview
Released
Released	September 2025	April 2025
Sound
Type
Type	Portable speaker	Portable speaker
Dolby Atmos
Dolby Atmos	No	No
Drivers
Drivers	Two 123 mm (5 in) woofers, two 20 mm tweeters and three passive radiators (two round, one racetrack); AI Sound Boost	2-way; one X-Balanced Speaker Unit woofer (about 79 × 107 mm) and two tweeters (about 46 mm, left and right), with passive radiators
Amplifiers
Amplifiers	2 × 65 W RMS woofer + 2 × 40 W RMS tweeter on mains power; 2 × 60 W RMS woofer + 2 × 40 W RMS tweeter on battery	–
Frequency response
Frequency response	37 Hz – 20 kHz; signal-to-noise ratio over 80 dB	–
Audio formats
Audio formats	Lossless audio over USB-C from a compatible source	–
Room tuning
Room tuning	Bass Boost with Deep Bass and Punchy Bass modes	ULT button with ULT1 (deep bass) and ULT2 (punchy bass); Sound Field Optimization; 10-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 5.4; A2DP 1.4, AVRCP 1.6	Bluetooth 5.3; SBC, AAC and LDAC; A2DP, AVRCP and SPP; multipoint connection to two devices; Google Fast Pair
Ports
Ports	AC in; USB-C (audio in and power bank out)	3.5 mm audio input; USB-C for charging in and out (can charge a phone at 5 V, up to 1.5 A)
Multi-room
Multi-room	Auracast stereo pairing of two Boombox 4s, and multi-speaker playback with other Auracast JBL speakers	Stereo Pair with a second ULT FIELD 5; Party Connect with compatible Sony speakers
App
App	–	Sony | Sound Connect
Design
Battery life (maker's claim)
Battery life (maker's claim)	Up to 28 hours	Up to 25 hours
Water and dust resistance
Water and dust resistance	IP68	IP67
Weight
Weight	5.89 kg	3.3 kg (better)
Battery life detail
Battery life detail	Up to 28 hours, plus 6 hours with Playtime Boost; replaceable 99.02 Wh (21.6 V, 4,584 mAh) lithium-ion battery pack, sold separately; 3 hours to charge	About 25 hours at volume 18 of 50 with ULT on and the lights off; about 10 hours with the lights on; about 2.5 hours at maximum volume with the lights on; about 3.5 hours to charge with a 9 V 3 A USB PD adaptor; 10 minutes of charging gives about 100 minutes of playback; Battery Care mode limits charge to about 90%
Controls
Controls	Buttons on the top panel, including Bass Boost; the JBL logos on the passive radiators light up when Bass Boost is on	Buttons for power, Bluetooth/Stereo Pair, CONNECT (Party Connect), play, volume, ULT and LIGHT; battery and Battery Care button behind the cap; 360° Party Lights
Microphones
Microphones	–	None listed among the parts, and no calling profile (HFP or HSP)
Mounting
Mounting	–	Detachable shoulder strap
Size
Size	506.4 × 262.9 × 212.9 mm (W × H × D)	320 × 144 × 125 mm (W × H × D)
Colours
Colours	Black, Blue, Squad	Black, Off White
In the box
In the box	Boombox 4, AC power cord (2 m), quick start guide, safety sheet, warranty card	Speaker, shoulder strap, USB-C to USB-C cable