JBL Boombox 4 vs Marshall Stanmore III Bluetooth Speaker
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At a glance
Key specifications and important differences. Full details follow below.
| Feature |  JBL Boombox 4 |  Marshall Stanmore III Bluetooth Speaker |
|---|---|---|
| Price | KSh 61,000.00 | KSh 56,000 |
| Battery | Rechargeable Li-ion polymer (21.6V / 4584mAh / 99.02Wh), up to 34 hours playtime, replaceable | N/A — mains-powered product |
| Weight | 13 lbs/5.8KG | 4.25 kg |
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Full specifications
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General
| Specification | JBL Boombox 4 | Marshall Stanmore III Bluetooth Speaker |
|---|---|---|
| Brand | JBL | Marshall |
| Model | Boombox 4 | Stanmore III Bluetooth Speaker |
| Announced | Released: 2025 | — |
| Type | Portable Party Speaker | Home Speaker |
| Color | Black, Camo, Blue | Black, Cream, Brown |
Audio
| Specification | JBL Boombox 4 | Marshall Stanmore III Bluetooth Speaker |
|---|---|---|
| Drivers | Two 5" woofers, two 3/4" tweeters, three passive radiators | 1 x woofer, 2 x outward-angled tweeters (2-way system) |
| Frequency Response | 37-20,000 Hz | 45Hz - 20kHz |
| Total Power Output | 200W RMS (65W AC/60W battery per woofer; 40W AC/battery per tweeter) | Up to 80W Class D amplification |
| Audio Features | AI Sound Boost, two Bass Boost modes (Deep/Punchy), JBL Portable app EQ | Dynamic loudness, placement compensation via app |
| Speaker Configuration | — | 2-way stereo home speaker; bass-reflex cabinet |
| Maximum SPL | — | 97 dB @ 1 m |
| Amplifier | — | 1 x 50 W Class D woofer amplifier; 2 x 15 W Class D tweeter amplifiers |
| Audio Channels | — | Stereo |
| Sound Modes / EQ | — | Adjustable bass and treble; Dynamic Loudness; Placement Correction in Marshall Bluetooth app |
Connectivity
| Specification | JBL Boombox 4 | Marshall Stanmore III Bluetooth Speaker |
|---|---|---|
| Bluetooth | Bluetooth 5.4 | Bluetooth 5.2 |
| Wi-Fi | N/A — Bluetooth-only portable speaker | No |
| Wired Inputs | USB-C for lossless audio | RCA, 3.5mm AUX |
| HDMI | N/A — portable speaker design | — |
| USB | Bluetooth 5.4, Auracast multi-speaker, USB-C for lossless audio | — |
| Multi-Speaker / Stereo Pairing | Auracast pairs multiple speakers for stereo or party mode, enhancing group experiences for families or friends at barbecues or road trips. | — |
| App Support | JBL Portable app for EQ, updates, and pairing | Marshall Bluetooth app (iOS and Android); OTA software updates |
| Bluetooth Range | — | 10 m (30 ft) |
| Microphone / Guitar Inputs | — | N/A - no microphone system |
Power & Battery
| Specification | JBL Boombox 4 | Marshall Stanmore III Bluetooth Speaker |
|---|---|---|
| Power Source | Rechargeable battery / USB charging | Mains-powered (AC adapter included) |
| Battery Life | Up to 34 hours (28 hours standard + 6 hours Playtime Boost) | N/A — mains-powered product |
| Charging Time | Approximately 35 hours full charge | N/A — mains-powered product |
| Fast Charging | — | N/A — mains-powered product |
| Charging Port | — | N/A — mains-powered product |
| Power Consumption | — | Network standby power consumption: No |
Design & Controls
| Specification | JBL Boombox 4 | Marshall Stanmore III Bluetooth Speaker |
|---|---|---|
| Water & Dust Resistance | IP68 (submersible up to 1.5m for 30 min) | No water-resistance rating |
| Materials | Rugged rubberized housing, durable fabric grille, integrated carry handle | Wood frame with vegan leather covering, brass details |
| Placement / Mounting | Free-standing portable placement | Home speaker; Placement Correction in Marshall Bluetooth app |
| Controls | — | Analog bass, treble, and volume knobs |
Features
| Specification | JBL Boombox 4 | Marshall Stanmore III Bluetooth Speaker |
|---|---|---|
| Voice Assistant | N/A — no built-in voice assistant | No |
| Lightshow | Yes — integrated party lightshow | N/A — no party lightshow |
| Home Cinema Features | N/A — not a home-cinema speaker | N/A — not a home-cinema product |
| Special Features | Multi-device pairing (two devices), automatic reconnection, recycled materials | Marshall Signature Sound; PVC-free build with 70% recycled plastic; Bluetooth LE Audio-ready; OTA software updates |
| Party Features | — | N/A — not a party-speaker product |
What's in the Box
| Specification | JBL Boombox 4 | Marshall Stanmore III Bluetooth Speaker |
|---|---|---|
| Speaker / Soundbar | Boombox 4 | Stanmore III Bluetooth Speaker |
| Subwoofer | N/A — no subwoofer supplied | N/A — no subwoofer supplied |
| Remote Control | N/A — no remote control supplied | N/A — no remote control supplied |
| Power Cable | USB charging cable | Mains lead |
| Audio / HDMI Cable | N/A | — |
| Mounting Accessories | N/A — portable design | — |
| Other Accessories | Speaker, 6.5' AC power cord, Get Started Sheet, Safety Instructions, Warranty | N/A |
| Documentation | Quick Start Guide and safety documentation | Quick Start Guide and safety documentation |
Design
| Specification | JBL Boombox 4 | Marshall Stanmore III Bluetooth Speaker |
|---|---|---|
| Weight | 13 lbs/5.8KG | 4.25 kg |
| Dimensions | — | 350 x 203 x 188 mm |
Battery & Charging
| Specification | JBL Boombox 4 | Marshall Stanmore III Bluetooth Speaker |
|---|---|---|
| Battery | Rechargeable Li-ion polymer (21.6V / 4584mAh / 99.02Wh), up to 34 hours playtime, replaceable | N/A — mains-powered product |