JBL Charge 6 VS Sony ULT Field 3

The most consequential design difference between these two speakers is their water protection rating. The JBL Charge 6 carries an IP68 certification, meaning it can be fully submerged in water — a genuine advantage for pool use, kayaking, or accidental drops in water. The Sony ULT Field 3 is rated IP66, which offers solid protection against powerful water jets and rain but does not cover submersion. For most outdoor scenarios this distinction is academic, but for water-adjacent activities it matters significantly.

Portability tells a clearer story. The JBL Charge 6 weighs 960 g compared to the Sony's 1,200 g — a 25% heavier body that compounds with the Sony's larger footprint (256 × 113 mm vs the JBL's 228.8 × 98.5 mm). The Sony is also flatter at 79 mm thick versus the JBL's 94 mm, giving it a more slab-like profile, while the JBL is more cylindrical and compact. In practice, the JBL will feel noticeably lighter in a bag or when carried by hand. The JBL also uses a neodymium magnet — a detail that partly explains its lower mass while maintaining driver performance, a technology the Sony omits.

Both speakers share a practical, no-frills control layout with a physical control panel on the device, a detachable cable, and no touch screen, RGB lighting, or remote. Neither includes a travel bag. Overall, the JBL Charge 6 holds a clear design edge: it is meaningfully lighter, more compact, and offers superior water protection — three factors that collectively make it the stronger choice for portability and outdoor durability.

Both speakers reach the same 20,000 Hz ceiling on the high end, so treble reproduction is nominally identical. The real divergence is at the low end: the Sony ULT Field 3 claims a 20 Hz low-frequency limit, while the JBL Charge 6 bottoms out at 56 Hz. That 36 Hz gap sits squarely in the sub-bass register — the range responsible for the rumble in electronic music, the weight of kick drums, and the physical impact of bass-heavy tracks. On paper, the Sony's spec suggests meaningfully deeper bass extension.

What makes this more nuanced is how each speaker achieves its low-end output. The JBL Charge 6 uses a passive radiator — a membrane that moves sympathetically with the active driver to reinforce bass frequencies without requiring additional power. This is a well-proven technique for extracting punchy, controlled low-end from a compact enclosure. The Sony ULT Field 3 omits a passive radiator entirely, relying instead on its driver configuration alone to reach that ambitious 20 Hz floor. Whether that specification translates to audibly superior bass in practice depends on driver quality and tuning, which these specs alone cannot confirm.

Based strictly on the available data, the Sony ULT Field 3 holds a spec-level edge in bass reach, with a frequency floor nearly three times lower than the JBL's. However, the JBL's passive radiator is a tangible hardware advantage for bass reinforcement that partially offsets the gap. Listeners who prioritize deep, sub-bass presence will find the Sony's numbers more compelling; those who value tighter, punchy bass from a proven acoustic design may lean toward the JBL.

Battery life is where these two speakers part ways most clearly. The JBL Charge 6 is rated for 28 hours of playback, while the Sony ULT Field 3 comes in at 24 hours — a four-hour difference that represents roughly a 17% advantage for the JBL. In practical terms, that gap could mean the difference between recharging mid-weekend camping trip or comfortably lasting through it.

Everything else in this category is a draw. Both speakers have a rechargeable, non-removable battery with a battery level indicator, and neither supports wireless charging. The absence of wireless charging on both means users are committed to a cable for top-ups — a minor but consistent inconvenience compared to Qi-enabled alternatives on the market.

For this spec group, the JBL Charge 6 has a clear edge purely on endurance. Four hours of additional runtime is a meaningful real-world advantage for extended outdoor use, travel, or situations where access to a power source is limited. The Sony is still competitive at 24 hours, but when all other power-related features are identical, the JBL's longer battery life is the deciding factor here.

Connectivity between these two speakers is largely identical, but two differences stand out. The JBL Charge 6 runs on Bluetooth 5.4 versus the Sony ULT Field 3's Bluetooth 5.2 — a newer revision that brings incremental improvements to connection stability and efficiency, though both will perform reliably at their shared 10 m maximum range in typical real-world conditions. More notably, the JBL supports Auracast, a broadcast audio feature introduced with Bluetooth 5.2+ that allows a single source to stream simultaneously to multiple receivers — useful for shared listening scenarios without pairing limitations. The Sony offers no equivalent.

Where both speakers converge is in what they lack. Neither supports any high-resolution audio codec — no LDAC, aptX, AAC, or any variant — which means audio transmission is limited to standard SBC regardless of the source device. There is no AUX input, no Wi-Fi, no AirPlay, and no Chromecast on either unit. Both offer a single USB-C port, primarily for charging. For listeners hoping to connect via a wired analog source or stream over a home network, neither speaker accommodates that.

Given the shared limitations, the JBL Charge 6 holds a modest but real connectivity edge: its newer Bluetooth version and exclusive Auracast support make it the more future-facing option. The Sony ULT Field 3 is not meaningfully behind for everyday single-device pairing, but the JBL offers capabilities the Sony simply does not.

Across most features, these two speakers are mirror images — both support wireless use, smartphone remote control, voice prompts, and a sleep timer, while neither offers fast pairing, voice commands, or a radio. The one feature that separates them is significant: the JBL Charge 6 works as a power bank, meaning it can charge other devices via its USB-C port directly from its internal battery. The Sony ULT Field 3 cannot.

For outdoor and travel use cases, this distinction carries genuine practical weight. Being able to top up a phone or another device from the speaker — without needing a separate power bank — reduces what a user needs to pack and provides a meaningful backup when outlets are unavailable. Given the JBL's already strong 28-hour battery noted in the power category, there is a reasonable reserve to share without significantly compromising playback time.

The JBL Charge 6 has a clear edge here, and it is a one-sided one. The power bank capability is a tangible, real-world utility that the Sony simply does not offer, making the JBL the more versatile companion for extended outdoor use or travel where carrying multiple devices is a consideration.

Within this specification group, there is only one data point — and it is identical for both products. The JBL Charge 6 and the Sony ULT Field 3 both support pairing for stereo sound, meaning two units of the same model can be linked together to create a dedicated left/right stereo configuration. This is a meaningful capability for users who own two speakers and want a wider, more spatially accurate soundstage than a single mono or pseudo-stereo unit can deliver.

This group is a complete tie. With only one shared spec and no differentiating data points, neither speaker holds any advantage here. The buying decision for this category comes down to whether the feature itself matters to the user — and if it does, both options deliver it equally.