Compare JBL Go 4 vs Marshall Bromley 450

Complex tracks can sound muddled, with limited separation between instruments. The compact mono design favors an energetic, direct presentation over precise layering.

The presentation stays coherent and immersive through transitions and around the room, helping complex tracks feel unified rather than disjointed.

Sound is directional rather than truly room-filling in every direction. Reviewers often preferred laying the speaker face-up, while listening from behind it produced a muffled and narrower presentation.

Marshall's True Stereophonic design works extremely well here, spreading sound evenly around the cabinet with little sense of a single sweet spot.

There is no 3.5mm auxiliary input, and the USB-C port does not carry audio. Reviewers who still use older wired players consider this a clear limitation.

Wired connectivity is unusually comprehensive, with AUX, RCA, USB-C, and dual XLR/6.35mm inputs turning the speaker into a capable karaoke, DJ, or small-performance rig.

Auracast works with newer compatible JBL speakers, but it does not connect with older PartyBoost models. Owners of legacy JBL speakers may not be able to mix them into the same group.

The battery is interchangeable with the Bromley 750, a cross-model convenience that was explicitly appreciated and makes spare-pack ownership more useful.

The SBC-only wireless connection is considered perfectly acceptable for casual music, podcasts, and video. It lacks higher-quality codec options for listeners who care about premium wireless audio.

Codec support covers SBC, AAC, and LC3, but the lack of aptX was singled out as a disappointment for buyers wanting higher-bitrate Bluetooth options.

The Go 4 begins to sound thinner when pushed to roughly 70 percent volume and beyond. It has useful output for its size, but limited reserve for demanding outdoor or party use.

Rhythm and dynamic handling stay lively across volume levels, giving the speaker strong punch without losing its sense of pace.

There is no built-in microphone, so the speaker cannot handle calls directly. Phone conversations and voice commands must stay on the connected device.

Dual XLR/6.35mm inputs make microphones genuinely useful for karaoke, speeches, and small performances, with onboard delay and reverb adding flexibility.

The JBL Portable app is generally easy to connect, simple to navigate, and reliable for EQ, battery checks, updates, and speaker grouping. A few reviewers found it basic rather than feature-rich.

The companion app is the clearest weak spot: it is clean and simple, but often feels bare because EQ, effects, and lighting controls are limited or missing.

The controls are tactile and generally easy to operate, but some reviewers found that presses register best in the center of each button. The side controls can also be hard to see in darker finishes.

Buttons and knobs give strong tactile feedback, with satisfying resistance that makes accidental adjustments less likely.

Most reviewers found pairing quick and playback stable, including use around the house and outdoors. A minority reported random disconnections, shutdowns, or unusually unreliable behavior.

Bluetooth playback was consistently stable in the tests that addressed it, including a steady signal at distance and no obvious connection dropouts.

Pairing through the JBL app is usually quick and dependable, and some owners found linking multiple speakers effortless. The physical Auracast-button process can be confusing, and one expert noted synchronization delay in stereo mode.

Auracast/Broadcast pairing proved very dependable in hands-on use, with multiple tests describing linking as effortless and the paired sound as immersive.

At roughly 190 grams, the speaker is exceptionally light and easy to slip into a pocket or bag. Its low weight is a defining advantage for travel, hiking, cycling, and everyday carrying.

At roughly 12.2kg, it is far easier to manage than the Bromley 750 but still undeniably hefty. Short moves are practical; carrying it far can become tiring.

The top-mounted play, skip, and volume controls are simple and useful, with separate power and pairing buttons on the side. A few users found the activation area narrower than the visible button surface.

The physical controls are a major strength, with clear source selection and dedicated knobs for volume, tone, instruments, and effects. They are quicker and more satisfying than relying on the app.

Wireless range is generally strong for a speaker this size, with reports ranging from about 30 feet to nearly 100 feet in favorable conditions. A few owners encountered much shorter usable range.

Bluetooth range held a steady signal at 30 feet in one test, while another source praised the connection for both stability and long reach.

A full recharge commonly takes around three hours, which reviewers consider acceptable but not especially quick for the available runtime. Some users praised faster charging, while others found the wait lengthy.

Charging is practical for such a large speaker: a full refill takes about three and a half hours, while a 20-minute quick charge can provide roughly six hours of playback.

USB-C charging is convenient and keeps the speaker compatible with common modern cables. The port is charging-only, fast charging is absent, and a full recharge can take around three hours.

USB-C charging is especially convenient with the removable battery, letting users charge the pack directly instead of moving the whole speaker.

Auracast adds useful flexibility for linking compatible JBL speakers, and two Go 4 units can form a true stereo pair. Cross-model groups remain mono, and setup is usually easier through the app.

The speaker can expand beyond one unit through Auracast or wired daisy-chaining, and hands-on pairing was easy. Multiple-speaker setups add noticeably more scale and immersion.

The tuning is often mid-forward, with clear voices and lively instruments but limited deep bass. Some listeners hear harsh or thin highs, while others find the overall balance remarkably full and controlled for the size.

The tuning is generally warm, balanced, and energetic, with clean mids and crisp highs. A few listeners found close-up sound harsher or wanted small EQ adjustments.

At roughly $40 to $50—and especially when discounted—the speaker is widely considered an affordable way to get dependable portable sound and a rugged build. Some rivals offer more battery or bass for similar money.

The price is undeniably premium, but the build, battery life, sound, and connectivity make it easier to justify. Budget-focused buyers can get powerful alternatives for less.

A single Go 4 is mono and offers limited left-right separation. Pairing two identical units creates true stereo and a much wider, more immersive presentation, though occasional sync delay has been reported.

Stereo separation is wide and immersive, with channels staying distinct and paired units creating a convincing concert-like image.

Vocals and spoken content are usually clear, forward, and easy to understand, making the speaker useful for podcasts and audiobooks. Some default EQ settings can let voices compete with other elements, but tuning helps.

Vocals are usually clear and detailed, though a few tracks can sound slightly subdued or muffled until the bass is adjusted.

Battery life is adequate for casual outings, with many users getting roughly five to seven hours and some reporting longer results. Others experienced shorter or inconsistent runtime, while Playtime Boost extends playback at a noticeable cost to sound quality.

Battery life is one of the strongest parts of the package, repeatedly praised at 40-plus hours. Real testing also showed very slow drain during long, loud sessions with lighting enabled.

Most owners are highly satisfied with the combination of sound, ruggedness, portability, and price. Negative experiences center mainly on isolated battery or connection failures and expectations beyond what such a small speaker can deliver.

Enthusiasm is extremely high, with several testers describing the speaker as almost perfect, easy to recommend, or their preferred party-speaker choice.

The five-band EQ and presets are a major improvement, letting users tame the mids, add punch, or improve vocal clarity. The small driver limits how much extra bass the EQ can create, and Playtime Boost disables custom tuning.

The physical bass and treble controls are effective and can quickly fix tonal issues. The tradeoff is limited adjustment range in some cases and no full remote EQ in the app.

Bluetooth setup is usually fast and straightforward across phones, tablets, and laptops. Reviewers commonly describe the connection process as simple enough to complete in seconds.

Bluetooth connectivity is broad and dependable, with Bluetooth 5.3, flexible device support, and stable playback contributing to one of the speaker's strongest feature areas.

The fabric wrap, rubberized edges, and sturdy body feel unusually solid for the price. The enclosure tolerates travel and rough handling well, though the fabric can collect dirt and sand.

The cabinet and chassis feel exceptionally solid, with dense wood construction and reinforcement that improve rigidity and help reduce unwanted resonance.

The Go 4 is well suited to bedrooms, bathrooms, offices, hotel rooms, and small outdoor groups. It provides pleasant personal-scale sound without dominating nearby spaces.

Despite its party-speaker power, the 450 can work well in living rooms and apartments, especially at lower levels. Its size is still substantial, so placement matters.

The overall sound is lively, clear, and enjoyable for casual listening, with much more scale than the tiny enclosure suggests. It cannot match larger speakers for bass depth, openness, stereo width, or fine detail.

Music playback is consistently praised across rock, electronic, pop, and acoustic material. The speaker combines party energy with enough balance and detail for everyday listening.

The Go 4 delivers strong value through its durable build, app-based EQ, waterproofing, and surprisingly lively sound. Its case becomes even stronger on sale, though battery-focused buyers can find longer-lasting alternatives.

Despite the high asking price, the 450 is often seen as the smarter-value Marshall party speaker because it keeps much of the 750's experience for substantially less money.

Bass is punchy and satisfying for such a tiny speaker, especially after EQ adjustment, but true low-bass depth is limited. Playtime Boost strips away much of the bass, and higher volumes can make the low end thin out.

Bass is warm, punchy, and powerful without usually becoming muddy or boomy. The main limitation is the deepest sub-bass, where the larger Bromley 750 has more weight and extension.

The IP67 build handles dust, sand, and outdoor use with little concern. Reviewers found it well suited to beaches, trails, workshops, and other messy environments.

IP55 dust protection is consistently treated as a useful outdoor advantage, helping the speaker cope with dirt, dust, and typical party environments.

The Go 4 plays impressively loud for its palm-sized body and can cover a desk, hotel room, kitchen, or small gathering. It does not have the output or projection needed for large parties or noisy open spaces.

It gets seriously loud and can fill rooms, patios, and mid-sized gatherings with ease. For very large events, the bigger Bromley 750 is still the stronger choice.

Durability is one of the strongest points: reviewers repeatedly report drops, bumps, travel, and outdoor abuse without meaningful damage. The rubberized edges and solid construction inspire confidence.

The enclosure feels built for real events, with reinforced corners, solid panels, and rugged protective details that should handle minor bumps and rough party use well.

The compact shape, colorful fabric finishes, and rubber accents are widely praised as cute, modern, and premium-looking. Some buyers dislike the oversized JBL logo or particular accent colors.

The retro amp-inspired design is one of the most consistently praised features. Black-and-brass styling, tactile hardware, metal grilles, and premium finishes make it look more like furniture than typical party gear.

Reviewers appreciate the use of recycled fabric and plastic along with largely paper-based packaging. These materials add environmental appeal without making the speaker feel cheap.

Replaceable batteries, repair support, durable LFP chemistry, and some recycled materials all strengthen the long-term ownership story. Several sources specifically framed the design as less disposable.

Its pocketable size, simple setup, and grab-and-go design make it exceptionally easy to use around the home, at work, or while traveling. Reviewers often describe it as a speaker they carry without thinking.

This works unusually well as an everyday home speaker as well as party gear. Its balanced low-volume sound and more manageable footprint make permanent room placement realistic.

Initial Bluetooth pairing is typically completed in seconds, and the app recognizes the speaker quickly. Stereo and multi-speaker setup is also straightforward when handled through the app.

Basic setup is straightforward: pairing, input use, and tonal adjustment can be handled quickly, and several tasks take only seconds once the speaker is in place.

Many reviewers heard clean, surprisingly controlled sound at louder levels, while others noticed harsh treble, lost detail, or strain near maximum volume. It performs best below its absolute limit.

Playback usually stays clean when pushed, but absolute maximum volume can bring compression, softer highs, or less composed bass. The weakness shows up mainly at the extreme end.

The speaker reveals an impressive amount of vocal and instrumental detail for its size, especially after EQ tuning. Dense or heavily layered recordings can still lose texture and separation.

Fine detail is a real strength, from vocal texture to individual instrument lines. Several tests found that detail remains audible even when the speaker is playing loudly.

The built-in fabric loop feels sturdy and makes the speaker easy to hang from a bag or hook. Several reviewers still wish JBL had included an integrated carabiner or a more versatile strap.

The sturdy side handle generally makes room-to-room transport easy, and several sources liked its grip. The side placement can feel awkward, and there are no wheels for longer hauls.

Water protection is consistently praised: the IP67 speaker survives splashes, rain, dunking, and poolside use without trouble. Reviewers regularly treat it as a dependable beach, shower, and outdoor companion.

The IP55 protection makes splashes, light rain, and ordinary outdoor party mishaps much less worrying. It is well suited to patios, parks, and poolside use, though not submersion.

At low and moderate listening levels, the sound remains enjoyable and can compare closely with newer compact models. It works especially well for desk listening, quiet rooms, and background music.

It performs unusually well at quieter levels, staying balanced and enjoyable for background listening. One test wanted a little more bass at low-to-medium volume.

Many packages include a USB charging cable, but the supplied cable is often described as very short and a wall adapter may be absent. Buyers may prefer to use their own longer cable and charging block.

The speaker floats when dropped in water, making it easier to retrieve at a pool or lake. That adds practical reassurance beyond its waterproof rating.

Reviewers who used the speaker with video reported low or minimal latency. It is suitable for casual phone, tablet, or laptop viewing without obvious lip-sync problems.

The white-and-amber LED system is tasteful rather than garish, with reactive patterns that add atmosphere without overwhelming the room.

Three lighting presets range from ambient glow to more energetic music-reactive effects, and they are widely liked for their classy stage-inspired look. Customization through the app is limited.

Multipoint lets the speaker stay connected to two devices and switch between them smoothly. Reviewers found it useful for moving between a phone, tablet, or laptop without repeated pairing.

The total package feels premium, durable, and unusually versatile, combining strong sound, long battery life, rich connectivity, and distinctive design. The limited app is the most consistent blemish.

Overall sound quality is a major strength: powerful, spacious, detailed, and lively across many genres. Minor complaints focus on deepest bass extension and composure at absolute maximum volume.

The removable battery can double as a power bank, making it easy to top up phones, headphones, tablets, or other USB-C devices during an event.

Long-session testing gave the power system a strong reliability impression, with one tester describing the speaker as something that simply does not quit.

Remote control is frustratingly limited because the app cannot fully adjust EQ, mic effects, or lighting. That matters most when the speaker is across a large room.

The soundstage has little vertical dimension and becomes muffled from behind the speaker. Its presentation is broader than expected for the size, but not spacious or three-dimensional.

The lack of a microphone means there is no speakerphone function. Buyers who want hands-free calls need a different portable speaker.

The basic light communicates low battery and operating status, but reviewers wanted a more precise, graduated battery display. The app provides a clearer percentage readout.

The underside tripod mount is a practical bonus for events, letting the speaker sit above a crowd and make better use of its 360-degree dispersion.

The speaker has no native voice-assistant support, so commands must be made through the phone. Reviewers who wanted hands-free control viewed this as a notable omission.