JBL Boombox 4 vs Sony ULT FIELD 7
Better figure, where one is clearly better
| JBLBoombox 4 | SonyULT FIELD 7 | |
|---|---|---|
| Overview | ||
| Released | September 2025 | April 2024 |
| Sound | ||
| Type | Portable speaker | Portable speaker |
| Dolby Atmos | No | No |
| Drivers | Two 123 mm (5 in) woofers, two 20 mm tweeters and three passive radiators (two round, one racetrack); AI Sound Boost | 2-way; two X-Balanced Speaker Unit woofers (about 114 × 114 mm) and two tweeters (about 46 mm), left and right, with passive radiators |
| 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 | 37 Hz – 20 kHz; signal-to-noise ratio over 80 dB | – |
| Audio formats | Lossless audio over USB-C from a compatible source | – |
| Room tuning | Bass Boost with Deep Bass and Punchy Bass modes | ULT button with ULT1 (deep bass) and ULT2 (punchy bass); Sound Field Optimization; 7-band custom equaliser in the app |
| Connections | ||
| Wi-Fi | No | No |
| Bluetooth | Yes | Yes |
| AirPlay | No | No |
| Voice assistants | None | None |
| Bluetooth | Bluetooth 5.4; A2DP 1.4, AVRCP 1.6 | Bluetooth 5.2; SBC, AAC and LDAC; A2DP, AVRCP and SPP; multipoint connection to two devices |
| Ports | AC in; USB-C (audio in and power bank out) | 3.5 mm audio input; 6.3 mm microphone or guitar input; USB-A for playing MP3, WMA and WAV files and charging a phone (5 V, up to 1.5 A); mains power input |
| 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 7; Party Connect with up to 100 compatible Sony speakers |
| App | – | Sony | Music Center and Fiestable |
| Design | ||
| Battery life (maker's claim) | Up to 28 hours | Up to 30 hours |
| Water and dust resistance | IP68 | IP67 |
| Weight | 5.89 kg (better) | 6.3 kg |
| 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 30 hours at volume 16 with ULT on and the lights off; about 25 hours with the lights on; about 3 hours at maximum volume with the lights on; about 5 hours to charge from the mains; 10 minutes of charging gives about 3 hours of playback; Battery Care mode limits charge to about 90% |
| 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, play, volume, ULT and LIGHT; key control, echo and guitar buttons and a microphone and guitar level knob on the rear panel; battery and Battery Care button |
| Microphones | – | None listed among the parts, and no calling profile; a wired microphone can be plugged in for karaoke |
| Mounting | – | Carry handles; works lying horizontally or standing vertically |
| Size | 506.4 × 262.9 × 212.9 mm (W × H × D) | 512 × 224 × 222 mm (W × H × D) |
| Colours | Black, Blue, Squad | Black |
| In the box | Boombox 4, AC power cord (2 m), quick start guide, safety sheet, warranty card | Speaker, AC power cord |
