About the Marshall Kilburn III

Product highlights:
- portable Bluetooth speaker for use with smartphones, tablets, and laptops
- Bluetooth 5.3 with Auracast
- high-quality audio streaming
- lets you simultaneously pair two devices
- analog volume, bass and treble control knobs
- two 2" full-range speakers and one 4" woofer, driven by three independent Class D amplifiers
- bass reflex cabinet
- total system power 50W (10W x 2 plus 30W for woofer)
- frequency response: 45-20,000 Hz
- rechargeable and replaceable battery delivers up to 50 hours of operation
Marshall Bluetooth app:
- free download from Apple App Store and Google Play
- control playback, including sound source and volume
- equalizer and balance presets
- get over-the-air firmware updates
Other info:
- 3.5mm stereo minijack input for portable devices
- IP54-rated waterproof and dustproof
- USB-C charging cable
- 10-3/4"W x 6-3/4"H x 6"D
- weight: 6.2 lbs.
- warranty: 1 year
- MFR # 1007973
- Item # 972KLBRN3C
What's in the box:
Marshall Kilburn III owner's manual
If you need assistance accessing this owner's manual, please give us a call.- Bluetooth portable speaker
- 6.5' USB-C cable
- Hand Strap (pre-nstalled)
- Quick Start Guide
- Legal & Safety booklet
More details on the Marshall Kilburn III

Features & specs
Physical Design | ||
---|---|---|
Width | 10.75 | |
Height | 6.75 | |
Depth | 6 | |
Weight | 6.2 | |
Weather Resistance | IP54 | |
Color | Cream | |
Power and Battery Info | ||
Built-in Battery | Y (50 hours) | |
Charges External Device Via USB | No | |
Runs On AC Power | No | |
Connections | ||
USB | No | |
Aux Inputs | 1 | |
Headphone Jack | No | |
Bluetooth Version And Supported Audio Formats | ||
Bluetooth Version | 5.3 | |
aptX | No | |
aptX-HD | No | |
AAC | Yes | |
LDAC | No | |
SBC | Yes | |
Other Wireless Features | ||
Hands-free Calling | No | |
Wi-Fi | No | |
Apple AirPlay | No | |
Stereo Pairing | No | |
Unison Pairing (Party Mode) | Yes | |
Driver Details | ||
Tweeter Size | 0 | |
Tweeter Type | N/A | |
Midrange Size | 2 | |
Midrange Type | Cone | |
Woofer Size | 4 | |
Woofer Type | Cone | |
Audio Specs | ||
Frequency Response | 45-20k | |
Amplification (Watts RMS) | 36 | |
Warranty | ||
Parts Warranty | 1 Year | |
Labor Warranty | 1 Year |
Product Research
Features
Classic Marshall Design: The Kilburn III features a classic Marshall design, with a vintage-looking front fret, brass-colored control knobs, and the iconic script "Marshall" logo. The portable Bluetooth speaker also comes with a guitar-influenced leather hand-strap that enables easy and stylish travel. The Kilburn III is available in a black or cream vinyl ("leather-look").
Dust & Water Resistant: The Marshall Kilburn III features a durable design with an IP54 rating, making it dust & water resistant.
Note: The Kilburn III is only dust & water resistant. It should never be submerged in water or exposed to salt water spray.
Room-Filling Stereo Sound: The Marshall Kilburn III employs a 3-drivery array with 50 watts of Class D amplification for dynamic, room-filling stereo sound. Two 2" full-range drivers receive 1- watts of power each and deliver both high and midrange frequencies. The single 4" cone woofer is housed in a bass reflex cabinet with a rear-firing port and receives 30 watts of power for smooth, deep bass response.
- 360-Degree True Stereophonic: Experience 360-degree True Stereophonic sound, a unique form of multi-directional sound from Marshall, where practically every position in the room is a "sweet-spot". By separating out the spatial content of stereo recordings, the Kilburn III produces a sound much larger than its size, outperforming many speakers in its class.
- Dynamic Loudness: The Kilburn III offers more bass than its predecessor thanks to its Dynamic Loudness feature that adjusts the tonal balance as you change the volume, so you get rich, full sound at any volume level.
- Auracast: Auracast allows you to wirelessly connect multiple Marshall Kilburn III and other compatible Auracast speakers together via Bluetooth for even bigger sound. You can adjust the volume on any individual speaker for the perfect sound balance.
Built-In Bluetooth 5.3: The Marshall Kilburn III speaker features built-in Bluetooth 5.3 with support for wireless audio streaming (A2DP) and control (AVRCP), as well as Secure Simple Pairing (SSP). The Marshall Kilburn III Bluetooth speaker has a wireless range of approximately 32.8'.
- Wireless Audio Streaming (A2DP/AVRCP): You'll be able to wirelessly stream stored music, music apps, and other audio content (including SBC and AAC audio codecs) from your Bluetooth-enabled smartphone, tablet, laptop or desktop computer to the Kilburn III speaker. You'll also be able to operate basic playback controls from the speaker including Play/Pause, Previous/Next Track, Fast Forward/Rewind, and Volume Up/Down. Advanced music navigation and song/artist/album information will still be done by your Bluetooth-enabled source device.
- Secure Simple Pairing (SSP): Thanks to support for Secure Simple Pairing (SSP), you can pair multiple Bluetooth devices with the Marshall Kilburn III speaker and two devices can remain connected at the same time. With two source devices connected and one device is playing, the second connected device cannot start playing until the first device is paused.
Aux Input: In addition to wireless Bluetooth connectivity, the Kilburn III is outfitted with a rear-panel stereo minijack (3.5mm) input for connecting practically any portable audio device with an analog output or headphone jack.
Marshall Bluetooth App: The Marshall Bluetooth app (for Apple iOS 14.0+ and Android OS 7.0+) allows control of the Kilburn III Bluetooth speaker from your compatible smartphone or tablet via a wireless Bluetooth connection. From the app, you can select between the Bluetooth or Aux Input source. You can also control basic playback functions such as Play/Pause, Previous/Next Track, Fast Forward/Rewind, and Volume Up/Down. In addition, you get access to 3 EQ Presets to customize your music listening experience. The app even offers over-the-air (OTA) updates to ensure the speaker is always up-to-date with the latest firmware and software features.
Top-Panel Controls: The Kilburn III's top-panel features 3 analog control knobs for bass, treble and volume, allowing you to fine-tune to the exact sound you desire. There is also a 3-way switch that controls Play/Pause, Previous/Next Track, and Fast Forward/Rewind functions; as well as a 2-way switch to turn the speaker system On/Off. In addition, a Bluetooth pairing button is located on the top-panel.
Rechargeable Battery: The Marshall Kilburn III portable Bluetooth speaker has a built-in lithium-ion rechargeable battery that provides up to 50 hours of playback time (varies by volume level and audio content). The Kilburn III speaker includes a USB-C port (5V/3A) and a 6.5' USB-C cable to aid in charging the built-in battery through a 3rd party USB/AC power adapter (sold separately). The Kilburn III has quick charging capability that provide up to 3 hours of playback with only a 20 minute charge. A fully charged battery can be reached in 3 hours. A 10-segment battery indicator on top of the speaker shows the battery charge with a steady light and a rising animation indicates charging.
Note: The Kilburn III does not come with a USB/AC power adapter to charge the built-in battery. A USB/AC power adapter must be purchased separately to charge the built-in battery.
Charging Bank: The Kilburn III speaker's USB-C port and built-in battery can also be used to recharge your the battery of your smartphone, tablet, or other small electronic USB-enabled device.
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