Marshall Stanmore III Bluetooth Speaker

Marshall Stanmore III Bluetooth Home Speaker

The Marshall Stanmore III is a premium home Bluetooth speaker built for room-filling sound, classic Marshall styling, and flexible connectivity. With a wider stereo soundstage, Bluetooth 5.2, RCA and 3.5mm inputs, app control, OTA updates, and dedicated bass and treble controls, it is designed for powerful everyday home listening.

Key Features

• Re-Engineered Wider Stereo Soundstage
  Outward-angled tweeters and updated waveguides create a broader, more immersive listening experience.
• Powerful 80W Amplification
  Uses one 50W Class D amplifier for the woofer and two 15W Class D amplifiers for the tweeters.
• Bluetooth 5.2
  Supports modern wireless audio connectivity and is ready for Bluetooth LE Audio.
• RCA + 3.5mm Inputs
  Connect turntables, computers, TVs, music players, and other compatible wired sources.
• Analogue Bass & Treble Controls
  Fine-tune sound directly from the speaker.
• Marshall Bluetooth App
  Access advanced sound settings and OTA software updates.
• Iconic Marshall Design
  Features the classic Marshall script, textured cabinet styling, and brass-style controls.

Main Feature Sections

Wider, More Immersive Sound
The Stanmore III uses a two-way driver system with outward-facing tweeters to create a wider soundstage while maintaining strong bass, clear mids, and crisp treble.

Simple Pair-and-Play Operation
Bluetooth pairing, volume, bass, treble, source selection, playback, and power controls are all available directly on the top panel.

Flexible Wired & Wireless Connectivity
Use Bluetooth 5.2 for wireless streaming, or connect through RCA and 3.5mm inputs for compatible wired devices.

App Control & OTA Updates
The Marshall Bluetooth app adds extra sound controls and allows software updates to keep supported features current.

Technical Specifications

• Product Type: Bluetooth Home Speaker
• Brand: Marshall
• Model: Stanmore III
• Frequency Range: 45Hz–20kHz
• Maximum SPL: 97dB @ 1m
• Speaker Type: Stereo
• Cabinet: Bass-reflex
• Woofer Amplifier: 1 × 50W Class D
• Tweeter Amplifiers: 2 × 15W Class D
• Total Amplifier Power: 80W
• Bluetooth: 5.2
• Bluetooth LE Audio Ready: Yes
• Bluetooth Range: Up to 10m / 30ft
• Wired Inputs: RCA, 3.5mm
• Wi-Fi: No
• Microphone: No
• Voice Assistant: No
• Water Resistance: No
• App: Marshall Bluetooth app
• OTA Updates: Yes
• Dimensions: 350 × 203 × 188mm
• Weight: 4.25kg
• Power Input: 100–240V, 50–60Hz
• Colors: Black, Cream, Brown
• Made In: Thailand
• Designed & Engineered In: Sweden

Controls

The top panel includes:

• Source button
• Volume control
• Bass control
• Treble control
• Play / pause
• Skip forward / backward
• Power switch

Best Use Cases

• Living room audio
• Bedroom listening
• Music streaming
• Turntable setups with compatible output
• Desktop or home-office audio
• Users who want premium home sound with physical controls
• Users who value classic Marshall design

Compatibility

• Compatible with Bluetooth-enabled phones, tablets, laptops, and audio devices
• RCA and 3.5mm inputs support compatible wired sources
• Marshall Bluetooth app available for iOS and Android
• No Wi-Fi or voice assistant functionality

What’s in the Box

• Marshall Stanmore III Speaker × 1
• Mains Power Lead × 1
• User Manual
• Legal & Safety Information