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Marshall Stockwell III Black and Brass Portable Speaker

Brand: Marshall

Product code: 1316540

New

Marshall Stockwell III Black and Brass Portable Speaker

Brand: Marshall

Product code: 1316540

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Speakers: 1x 3 ", 2x 1,75 "
Power: 127 W
Battery Operation: Yes
Play Time (hours): 40
Sound Pressure Level - SPL (dB): 86
Frequency Range: 54 Hz - 20 kHz

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Marshall Stockwell III Black and Brass Portable Speaker

The Marshall Stockwell III Black and Brass is a portable Bluetooth speaker built around the brand's signature amp-inspired design, delivering True Stereophonic 360° sound from a compact 1.3 kg cabinet. With 40+ hours of playtime and IP55 dust and water resistance, this model is engineered for life on the move, from kitchen counters to campsite evenings. Bluetooth 5.3 with Auracast and multipoint pairing keeps two devices connected at once, while tactile brass knobs let listeners dial in bass, treble and volume without touching a screen.

True Stereophonic 360° sound from a 3" woofer and dual 1.75" wide-band drivers, tuned to keep detail intact at any volume.
40+ hours of portable playtime, plus 20 minutes of USB-C PD charging for 7 more hours of listening.
IP55-rated against dust and water splashes, with a removable carrying strap for grab-and-go transport.
USB-C power bank output charges a phone from the speaker, and the Li-ion battery is user-replaceable for years of service.

Marshall Stockwell III Black and Brass — Portable Bluetooth Speaker with Amp-Inspired Sound

The Marshall Stockwell III Black and Brass is a portable Bluetooth speaker that pairs the brand's classic guitar-amp aesthetic with modern wireless convenience. Designed and engineered in Sweden, it delivers True Stereophonic 360° sound from a sealed cabinet housing a 3" woofer and two 1.75" wide-band drivers, driven by dedicated Class D amplifiers. At 1.3 kg and 180 x 162 x 74 mm, it slips into a bag or hangs from the included strap without weighing down a day out.

What Sets This Portable Speaker Apart

What makes this speaker stand out is Marshall's True Stereophonic tuning, a multi-directional approach that removes the usual "sweet spot" so balanced sound reaches every corner of a room. Dynamic Loudness adjusts bass and treble in real time, keeping kick drum and vocal clarity intact at whisper-quiet and party-level volumes. The brass control panel adds a standalone power button, M-button and media jog — heritage amp details no touchscreen menu can replace.

Audio, Battery and Connectivity Specifications

The hardware inside this compact cabinet is built for everyday listening and outdoor sessions, with replaceable parts that extend its working life well beyond the warranty.

Drivers: 3" woofer + two 1.75" wide-band drivers — sealed cabinet with passive radiator for controlled bass.
Frequency Range: 54 – 20,000 Hz — 86 dB SPL @ 1 m maximum output.
Battery Life: 40+ hours per charge — replaceable Li-ion cell, 20-minute fast charge for 7 hours playback.
Bluetooth 5.3 with Auracast and multipoint pairing — plus 3.5 mm AUX and USB-C wired inputs.
IP55 dust and water resistance — 27% recycled materials, removable carrying strap.

Who the Stockwell III Is Built For

This model is the right choice for listeners who want a portable Bluetooth speaker that looks and sounds like a miniature stage amp, without sacrificing modern wireless features. It suits commuters, weekend travellers and home listeners who want 360° coverage rather than a narrow forward beam. Multipoint pairing makes it ideal for couples sharing one speaker between two phones, while IP55 protection and a removable strap open it up to balcony dinners, park hangs and beach trips.

Marshall's Heritage of Amp-Inspired Portable Speakers

Marshall has built its reputation on stage amplifiers used by generations of rock musicians, and the Stockwell III carries that DNA into a portable form factor. The brass control panel, script logo and silicone-wrapped cabinet echo the look of the company's classic guitar amps. Designed and engineered in Sweden, this speaker sits in a portable line alongside the Willen II, Emberton III and Middleton siblings.

I have a remark regarding the description

Power: 127 W

With power up to 127 W , you get plenty of headroom for impressive volume and dynamics whether you're in the studio, at home, or partying.

Play Time (hours): 40

Up to 40 hours of continuous use on a single charge, giving you plenty of time for intensive use and freedom without the need for a power supply.

Bluetooth: Yes

Integrated Bluetooth technology enables wireless connectivity and easy pairing with a wide range of compatible devices. This connection method ensures convenient and efficient use without cables, contributing to greater flexibility and ease of use.

Inputs

USB-C
3,5 mm Jack AUX IN
Bluetooth

Frequency Range: 54 Hz - 20 kHz

The frequency response 54 Hz - 20 kHz provides a wide enough range to capture all the fine musical and sonic details.

Bluetooth Version: Bluetooth 5.3

The product is equipped with Bluetooth 5.3 technology, which provides a faster and more stable wireless connection. This advanced version of Bluetooth offers lower power consumption, greater range and better sound quality, so you can enjoy a reliable and high-quality listening or communication experience.