Take powerful, immersive sound wherever you go with the Marshall Kilburn III Bluetooth Speaker in Black & Brass. Built for both indoor and outdoor listening, the Kilburn III combines Marshall's iconic rock-inspired styling with upgraded acoustics, extended battery life, and a rugged portable design.
The Kilburn III features True Stereophonic 360° sound, delivering multidirectional stereo audio so you can enjoy well-rounded mids, crisp highs, and deep bass from virtually anywhere around the speaker. Its audio system combines a 4-inch woofer with two 2-inch full-range drivers, powered by a 30W Class D woofer amplifier and two 10W Class D full-range amplifiers.
With 50+ hours of portable playtime, the Kilburn III is designed for extended listening without constantly needing to recharge. When you do need more power, 20 minutes of charging can provide up to 8 hours of playback when using a compatible 30W USB-C PD charger. The speaker can also act as a power bank, allowing you to charge your phone while you're on the move.
The Kilburn III is built to handle everyday adventures with an IP54 dust and water-resistant rating, providing protection against limited dust ingress and water splashes. A practical carrying strap makes it easy to move between rooms, take on trips, or bring along for outdoor listening.
For wireless listening, the speaker features Bluetooth 5.3 with Auracast, Bluetooth Multipoint connectivity, and a range of up to 10 metres. A 3.5mm AUX input is also available for wired audio connections. The tactile top-panel controls give you direct control over volume, bass, treble, playback, and presets.
Finished in the classic Black & Brass colourway, the Kilburn III brings together Marshall's unmistakable vintage-inspired aesthetic with modern portable audio technology.
Key Features
• Marshall Kilburn III portable Bluetooth speaker
• Classic Black & Brass finish
• Marshall Signature Sound
• 50+ hours of portable playtime
• True Stereophonic 360° sound
• 4-inch woofer and two 2-inch full-range speakers
• 50W total amplifier power
• Dynamic Loudness technology
• IP54 dust and water-resistant design
• Bluetooth 5.3 with Auracast
• Bluetooth Multipoint connectivity
• Up to 10m Bluetooth range
• 3.5mm AUX input
• Adjustable bass and treble controls
• Tactile onboard controls
• USB-C charging
• Fast charging support
• Can charge compatible mobile devices
• Portable carrying strap
• Marshall Bluetooth app compatibility
Product Specifications
• Brand: Marshall
• Model: Kilburn III
• Product Type: Portable Bluetooth Speaker
• Colour: Black & Brass
• Audio: Stereo
• Driver Type: Dynamic
• Drivers: 1 × 4-inch woofer + 2 × 2-inch full-range speakers
• Frequency Response: 45Hz–20kHz
• Maximum Sound Pressure Level: 91dB SPL @ 1m
• Woofer Amplifier: 1 × 30W Class D
• Full-Range Amplifiers: 2 × 10W Class D
• Total Amplification: 50W
• Wireless Connectivity: Bluetooth 5.3 / Auracast
• Bluetooth Range: Up to 10m
• Bluetooth Multipoint: Yes
• Wired Connectivity: 3.5mm AUX
• Playtime: 50+ hours
• Quick Charge: 20 minutes provides up to 8 hours of playtime with a 30W USB-C PD charger
• Full Charging Time: Approximately 3 hours with a 30W USB-C PD charger
• Water & Dust Resistance: IP54
• Battery: Rechargeable, replaceable Li-ion
• Power Bank Function: Yes
• Weight: 2.8kg
• Dimensions: 273 × 169 × 150mm
• Charging: USB-C
• Compatible App: Marshall Bluetooth App
Care Instructions
• Clean the speaker gently with a soft, dry cloth.
• Do not immerse the speaker in water.
• The IP54 rating protects against limited dust ingress and water splashes, but the speaker should not be submerged.
• Avoid abrasive cleaners, solvents, and harsh chemicals.
• Keep the charging port clean and dry before connecting the USB-C cable.
• Store in a cool, dry place when not in use.
• Use a compatible USB-C PD charger for fast charging.
The Marshall Kilburn III Bluetooth Speaker Black & Brass is an excellent choice for anyone looking for powerful 360° stereo sound, 50+ hours of battery life, rugged IP54 protection, modern Bluetooth 5.3 connectivity, and iconic Marshall styling in a genuinely portable package.
