Stockwell III Black and Brass against a dark background.
A man sits at a table with a Marshall Stockwell III Black and Brass speakerr, a large mug, and keys.
Left side of the image of the top view of Stockwell III Black and Brass.
Right side of the image of the top view of Stockwell III Black and Brass.
A person wearing black pants and purple slippers carries a Marshall Stockwell III Black and Brass portable speaker.
A person attaching Stockwell III Black and Brass strap.
Marshall Stockwell III Black and Brass portable speaker, black reed diffuser, and glass ornament are arranged on a small blue shelf.
Stockwell III Black and Brass portable speaker shown with water droplets on its surface.
Text reads: THIS SPEAKER KEEPS LIVE MUSIC ALIVE. 1% of member purchases on Marshall.com supports grassroots venues.

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STOCKWELL III

Portable Bluetooth speaker with 40+ hours of playtime
Details

Grab the carrying strap and take powerful sound with you. With 40+ hours of portable playtime on a single charge, there's plenty of opportunity to set the tempo then change it up throughout the day. Wherever you are around the speaker, its powerful 360° sound brings the room to life. Built to handle everyday knocks and splashes, keep the music going outside without a second thought. Designed and engineered in Sweden. Made in Thailand.

Features
Tech Specs - Icon - 40+ hours

40+ hours of portable playtime: Fill every hour with music that stays with you, wherever you decide to go

Tech Specs - Icon - True Stereophonic (vertical)

True Stereophonic 360° sound: Get the same quality and fullness of Marshall signature sound as you move around

Tech Specs - Icon - Dust & water-resistant (IP55)

Dust & water resistant: Handles dust and splashes of water from all directions

Tech Specs - Icon - Dynamic Loudness

Dynamic loudness: Get clear and balanced sound at whatever volume you choose

Tech Specs - Icon - Tactile controls

Tactile controls: Adjust your sound and get straight to your preset using heritage amp-inspired controls

Tech Specs - Icon - Charging bank

Charging bank: Charge other audio devices and keep playing the music you love.

AUDIO SPECIFICATION
Driver Type
Dynamic
Frequency range
48 – 20,000 Hz
Drivers
One 3 inch Woofer Two 1.75 inch wide-band drivers
Stereo/mono
Stereo
Maximum sound pressure level
86 dB SPL @ 1 m
Cabinet principle
Sealed with passive radiator
POWER AMPLIFIERS
One 65 Watt Class D Amplifier for the Woofer Two 31 Watt Class D Amplifiers for the Wide-Band drivers
Equaliser
Yes
CONTROLS AND CONNECTIVITY
Wireless connectivity
Bluetooth 5.3 Auracast
Wired connectivity
AUX 3.5 mm, USB-C
Bluetooth range
10m / 32.8ft
Top panel controls
Bass Treble Volume On/off Media jog M-button Bluetooth button
Codecs
SBC, LC3, MPEG-2 AAC
USB Spec
Type C, Charge out 5V, 3.0A
Bluetooth Multipoint Connectivity
Yes
PHYSICAL UNIT
Weight
1.3 kg / 2.9 lb
Width
150mm / 5.9 in
Height
181mm / 7.1 in
Depth
72mm / 2.8 in
Water Resistance
IP55
Colorways
Black and Brass Cream
Materials
27% of the total product is recycled
Repairability
Yes
Country of origin
Designed and engineered in Sweden. Made in Thailand.
Battery
Play time
40+ hours
Battery type
Rechargeable, replaceable, Li-ion battery
Battery Preservation
Yes
Quick Charging
20 minutes of charge time gives 8 hours of playtime with a 30W USB-C PD charger
Charging time
<3 hours to full recharge with a 30W USB-C PD Charger
Power input
USB-C 9V/3A, 5V/3A
Exchangeable Battery
Yes
INCLUDED IN THE BOX
Box Contents
Speaker Strap USB-C to USB-C charging cable Quick start guide Legal and safety information
COMPATIBLE APPS
Apps
Marshall Bluetooth app
Support & more information

Colour

Black and Brass

Stockwell III Black and Brass
Stockwell III Cream

Coming Soon

$ 249.99

Regular Price: $ 249.99

Free Delivery

2-7 Business Days

Returns, warranty & payment

Two people on a skate ramp with a portable Marshall Stockwell III Cream speaker placed between them. One is skateboarding while the other is seated.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

Legendary sound, inside & out

A GIF of a X inside a circle.

40+ hours of portable playtime

Pack your day with listening sessions from lights on to lights out. Wake up, make art, go skate, wind down. One charge delivers a solid 800 songs. Fill every hour with music that stays with you.

Stockwell III Black and Brass sits on a shelf next to a decorative reed diffuser, a small glass ornament, and assorted photos and posters on a blue wall.

True Stereophonic 360° sound

Forget sweet spots and tune into Stockwell III's unique form of multi-directional audio. Get the same quality and fullness of powerful signature sound as you move around it.

True Stereophonic 360° sound

Forget sweet spots and tune into Stockwell III's unique form of multi-directional audio. Get the same quality and fullness of powerful signature sound as you move around it.

A man sits at a round table with a large mug, a Marshall Stockwell III Black and Brass speaker, and keys.
Marshall Stockwell III Cream speaker on a skateboard deck.

Dust & water resistant

Sure, it may look more like a timeless design piece, but don’t be fooled. Stockwell III is at home indoors but never afraid to venture outside. It braves water splashes and licks of paint from all directions.

A person adjusting Marshall Stockwell III Black and Brass speaker placed next to a red heart candle, plants, and blue fabric patterns in the background.

Dust & water resistant

Sure, it may look more like a timeless design piece, but don’t be fooled. Stockwell III is at home indoors but never afraid to venture outside. It braves water splashes and licks of paint from all directions.

Close-up of a Stockwell III Black and Brass, featuring three control knobs and a black handle lined with red on the inside.

Dynamic loudness

Never lose the details that make a song. Even at lower volumes, bass and treble rise to keep the kick and clarity. When you turn it up, your music levels out just as it should for a naturally balanced sound.

A person customizing his skateboard deck at an art studio table covered in prints and supplies; a Marshall Stockwell III speaker sits nearby.

Tactile controls

A brand-new standalone power button, M-button, and media jog join the classic brass panel. Get instant access to your presets and skip through your favourite tracks with ease.

A hand with a tattoo presses the power button on a Marshall Stockwell III Black and Brass speaker.

Tactile controls

A brand-new standalone power button, M-button, and media jog join the classic brass panel. Get instant access to your presets and skip through your favourite tracks with ease.

A person sitting on the grass next to a French Bulldog and Marshall Stockwell III Cream speaker.

Charging bank

Stay on top of battery life wherever you take your music. Streaming from your phone? Connect it to the USB input, charge it up, and never let a listening session get cut short.

Charging bank

Stay on top of battery life wherever you take your music. Streaming from your phone? Connect it to the USB input, charge it up, and never let a listening session get cut short.

Stockwell III Black and Brass on an indoor skateboard ramp indoors, next to a charging smartphone.
Plugging a cable into the charging port of a Stockwell III Black and Brass.

MAKING OUR PRODUCTS LAST LONGER

Every time we design new products, we prioritise durability, repairability, and replaceable components to extend their lifespan and reduce waste. Stockwell III comes with a consumer replaceable battery and has enhanced settings in the app to preserve the battery lifespan. You can purchase replacement batteries at marshall.com.

MATERIALS

Stockwell III contains 27% recycled material by weight¹, reducing the need for virgin resources. This helps minimise environmental and social impacts associated with raw material extraction and processing. Using recycled content also helps lower carbon emissions compared to producing virgin materials². ¹Includes post-consumer recycled PC, post-consumer recycled PC-ABS, pre-consumer recycled aluminium alloy and post-consumer recycled neodymium (rare-earth elements). Calculations are based on total product weight, excluding accessories and packaging. ²Industry data indicates recycled materials generally have lower carbon footprint than virgin materials; actual reductions vary by material and process.

Product details

Playtime

40+ hours

Stereo/Mono

Stereo

Dust & water resistance

IP55

Dimensions

181 x 150 x 72 mm 7.1 x 5.9 x 2.8 in

COMMON QUESTIONS





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