• Bluetooth portable speaker designed for home and outdoor listening • 360° sound field design for balanced audio anywhere • 50+ hour battery life, no frequent charging on long weekends • IP54 dust and splash resistance for safer use on balconies and camping
Bank/ATM Transfer | 1% discount at checkout on order
Marshall KILBURN III｜360-degree Bluetooth speaker with 50+ hours of battery life
A 360-degree Bluetooth speaker you can take anywhere
Marshall KILBURN III is Marshall’s 360-degree Bluetooth speaker, featuring the brand’s signature True Stereophonic 360° acoustic design, 50+ hours of battery life, Bluetooth 5.3, and IP54 dust and splash resistance. Whether you’re moving from the living room to the balcony at home, taking it camping or on a picnic, or playing background music in a studio or party space, KILBURN III delivers stable, full-bodied sound with wider coverage.
Compared with traditional portable speakers that fire only from the front, Marshall KILBURN III uses a True Stereophonic multi-directional sound architecture to create a more flexible listening experience with a wider sweet spot; versus other portable speakers in its class, its advantages include longer battery life, a replaceable rechargeable lithium battery, physical knob controls, and a power-sharing design that can also charge your phone on the go.
Quick Facts
Brand:Marshall
Model:KILBURN III Black And Brass
Battery Life:50+ hours
Frequency Response:45Hz – 20kHz
Bluetooth:Bluetooth 5.3
Weight:2.8 kg
Applicable Scenarios:Home music playback, balcony and patio gatherings, camping and picnics, mobile workspaces, indoor and outdoor listening on the move
Who should buy the Marshall KILBURN III?
Who Should Buy
Home users who care about premium design and wide sound coverage, and want to move music freely between the living room, bedroom, and balcony
Users who often go camping, picnic, or host small gatherings and need a speaker with long battery life, portability, and resistance to everyday splashes and dust
Buyers who want one speaker that handles Bluetooth playback, AUX wired input, and temporary phone charging
Who Should NOT Buy
People looking for an ultra-light everyday speaker to toss into a small bag or coat pocket, since KILBURN III is a medium-to-large portable model
Users whose main need is calls or voice pickup, because this product has no built-in microphone and is designed primarily for music playback
Marshall KILBURN III core technologies and features
True Stereophonic 360° sound technology: Uses Marshall’s signature multi-directional acoustic architecture so sound is not limited to a single front-facing projection; whether you’re in front of, beside, or a little farther from the speaker, you get more balanced mids, clearer highs, and fuller low-end extension.
50+ hours of ultra-long battery life: One charge provides over 50 hours of portable playback, making long outdoor activities, multi-room listening, or several days of continuous use more convenient without constantly searching for power.
Dynamic Loudness compensation: The system automatically adjusts the balance of bass, mids, and treble based on volume, helping preserve instrument layering and detail even at higher volumes.
Three-amp drive architecture: Built-in 30W Class D amplifier drives the 4-inch woofer, while two 10W Class D amplifiers drive the two 2-inch full-range drivers, creating a 50W active stereo speaker system.
Bass-reflex active speaker design: Uses an Active stereo loudspeaker with bass reflex system enclosure to increase low-end presence and spaciousness in a portable size while maintaining energy and efficiency.
IP54 protection rating: Dust and splash resistance helps it handle everyday outdoor use, balconies, tabletop spills, and dust or droplets during transport, making it better suited to mixed indoor/outdoor scenarios.
Bluetooth 5.3 and Auracast: Supports next-generation wireless connectivity for more stable audio transmission and a more modern connection experience, while keeping room for future multi-device broadcast use.
Multi-codec support: Supports SBC, LC3, and MPEG-2 AAC codecs for compatibility with most mainstream phones, tablets, and mobile playback devices while maintaining everyday listening quality.
Bluetooth multipoint connectivity: Supports Bluetooth Multipoint Connectivity, making it easier to switch playback sources between multiple devices, ideal for users who alternate between phone and laptop.
3.5 mm AUX wired input: In addition to wireless playback, you can connect players, computers, or other devices with analog output via AUX 3.5 mm for more flexible source options.
Classic Marshall physical controls: The top panel includes Bass, Treble, Volume, On/Off, Media jog, M-button, and Bluetooth button for intuitive operation without needing to open an app every time.
Can act as a portable power source: Includes Charging bank functionality to top up your phone while you’re out, so the speaker does more than play music and also supports temporary mobile charging needs.
Rechargeable, replaceable lithium battery: Built-in Rechargeable, replaceable, Li-ion battery supports long-term use and serviceability, aligning with users who care about product lifespan.
Fast charging efficiency: With a 30W USB-C PD charger, 20 minutes of charging gives 8 hours of playback, and a full charge takes about 3 hours, which is very practical before heading out.
Marshall Bluetooth app compatible: Works with the official app for a more complete control and setup experience; even without the app, it still functions normally as a Bluetooth speaker.
Design and sustainability materials: 38% of the product’s overall materials are recycled, carrying on Marshall’s classic black-and-gold look while responding to consumers who care more about product lifecycle and material sourcing.
True Stereophonic 360° soundstage design
Marshall’s exclusive True Stereophonic technology centers on multi-directional sound projection, reducing the “sweet spot only” limitation common to traditional single-face speakers.
Through stereo placement, refined tuning, and wide-band driver design, different listening positions can enjoy more balanced tone and a fuller sense of space.
50+ hours of portable playback
More than 50 hours of playback is enough for long weekend trips, all-day gatherings, or extended background music across rooms.
If you need to head out in a hurry, 20 minutes of fast charging with a 30W USB-C PD charger gives you about 8 hours of playback.
Three-driver, three-amp active acoustic architecture
Features one 4-inch woofer and two 2-inch full-range drivers for solid bass, extended mids/highs, and a more complete stereo spread.
One 30W Class D amplifier drives the woofer, while two 10W Class D amplifiers drive the full-range drivers, balancing efficiency, control, and the power management needed for a portable product.
Dynamic Loudness adaptive tuning
The system dynamically adjusts the ratio of bass, mids, and treble as volume changes, reducing detail loss at high volume and weak bass at low volume.
For pop, vocals, electronic music, and everyday playlists, it delivers a more stable and consistent listening experience without frequent manual tone adjustments.
Bluetooth 5.3, Auracast, and multipoint connectivity
Supports Bluetooth 5.3 for wireless playback that better matches modern device connectivity needs, with a Bluetooth range of up to about 10 meters.
Supports Auracast and Bluetooth multipoint connectivity, making it easier for users who switch audio sources between phones, tablets, and laptops.
IP54 protection and outdoor-friendly design
IP54 means resistance to limited dust ingress and splashes from any direction, making it suitable for balconies, patios, camping, and everyday mobile use.
For users who switch between home and outdoor use, this level of protection feels safer than a purely indoor speaker and better matches a portable product.
Physical knob controls and app-compatible operation
The top panel provides bass, treble, volume, playback control, Bluetooth pairing, and an M-button shortcut, keeping Marshall’s familiar analog feel.
It also works with the Marshall Bluetooth app for even easier setup and daily use, but full playback does not depend on the app.
Portable charging and battery design for long-term use
Built-in Charging bank functionality can provide a temporary boost to your phone when battery is low, improving practicality for outdoor and mobile use.
Uses a rechargeable, replaceable lithium-ion battery and supports Battery Preservation, helping extend product lifespan and maintenance flexibility.
Standard In-box Accessories
1 x Speaker
1 x USB-C to USB-C charging cable
1 x Quick start guide
1 x Legal and safety information
Technical Specifications
Brand
Marshall
Model
KILBURN III Black And Brass
Speaker Type
Active stereo bass-reflex speaker system
Active / Passive
Active
Driver
1 x 4-inch woofer, 2 x 2-inch full-range drivers
Frequency Response
45Hz – 20kHz
Channel Support
Stereo
Maximum SPL
91 dB SPL @ 1 m
Amplifier Power
1 x 30W Class D (woofer) + 2 x 10W Class D (full-range drivers)
Fast charging and the 3-hour full charge require a 30W USB-C PD charger
This unit has no built-in microphone, so it is not suitable for calls or meeting pickup
The wired input is 3.5 mm AUX, so devices without a headphone jack may need an adapter
Marshall KILBURN III FAQ
A：Yes, KILBURN III has IP54 dust and splash resistance and 50+ hours of battery life.
A：Its 360° True Stereophonic design makes balanced sound easier to hear from different positions.
A：Yes, KILBURN III has Charging bank functionality and can serve as a temporary power source.
A：Yes, Bluetooth pairing is intuitive, the physical controls are clear, and it works without the app.
A：No, the app enhances the experience, but KILBURN III works normally without it.
THINK2 Warranty & Support
Service Highlights
Fast Shipping: In-stock items will be shipped within 24 business hours.
Professional Technical Support: Our certified audio engineers provide consultation for installation, licensing, compatibility, and setup.
Comprehensive Warranty & After-Sales Service: Includes both manufacturer warranty and THINK2 customer support.
※ Shipping times are calculated based on business days. Actual warranty follows the manufacturer’s policy. THINK2 provides integration and support assistance.
Warranty & Return Policy
With valid proof of purchase and product serial number, customers are entitled to manufacturer warranty and THINK2 after-sales service.
DOA / Non-human defects: Within 7 days of purchase, after verification, customers may request return or replacement.
Exclusions: Damages from misuse, unauthorized modification, consumable parts, natural disasters, or improper use beyond instructions.
Application Process: Contact customer service during business hours for return instructions.
Service Coverage: Taiwan region primarily; overseas based on logistics standards.
THINK2 — Authorized Audio Gear Dealer in Taiwan
202607100104
Shipping & Payment
Delivery Options
HCT Logistics
7-11 Pickup only (C2C)
Family Mart Pickup only (C2C)
7-11 Pickup and pay in store (C2C)
Family Mart Pickup and pay in store (C2C)
E-mail - download only
in-store pickup
Payment Options
Bank/ATM Transfer | Enjoy an Extra 1% Discount at Checkout
