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Marshall Stanmore III – Mid-size home speaker, 80W
Marshall Stanmore III is a mains-powered home Bluetooth speaker in Marshall’s Home line III: the mid-size model between compact Acton III and flagship Woburn III, with 80 W total output, outward-angled tweeters, analog bass/treble/volume knobs, and wired RCA plus 3.5 mm inputs. It suits living rooms and bedrooms that need more headroom than Acton without the footprint of Woburn.
District M is an authorized Marshall retailer in Vietnam with 12-month warranty and one-for-one replacement on eligible claims. Browse the Marshall speaker collection for Home and portable models in Black, Cream, and Brown.
Quick summary
| Specification | Detail |
|---|---|
| Product line | Marshall Home line III (plug-in, not portable) |
| Output | 80 W total: 1×50 W woofer + 2×15 W tweeters (Class D) |
| Frequency range | 45 Hz – 20,000 Hz |
| Max SPL | 97 dB @ 1 m |
| Wireless | Bluetooth 5.2 (LE Audio ready), range 10 m |
| Wired inputs | 3.5 mm aux + RCA stereo |
| Tone / room tools | Analog bass, treble, volume knobs + Placement Compensation, Dynamic Loudness |
| App | Marshall Bluetooth app (iOS / Android), OTA updates |
| Not included | Wi-Fi, multi-room, voice assistant, battery, HDMI |
| Dimensions | 350 × 203 × 188 mm (13.78 × 7.99 × 7.40 in) |
| Weight | 4.25 kg (9.37 lb) |
| Colors | Black, Cream, Brown |
| Materials | MDF cabinet, PU leather wrap, metal grille (70% recycled plastic in build) |
| Warranty (District M) | 12 months, authorized genuine product |
Why choose Marshall Stanmore III?
- Mid-size sweet spot: more output and RCA than Acton III, easier to place than Woburn III in typical apartments.
- Amp-inspired design: leather wrap, metal grille, gold script logo, and a brushed control panel with physical knobs.
- Wider Gen III soundstage: outward-angled tweeters and updated waveguides for a more spacious stereo image than Stanmore II.
- RCA for real sources: connect a turntable with line out, a CD player, or a TV with analog outputs alongside Bluetooth.
- Placement Compensation: app-assisted EQ when the speaker sits near a wall or in a corner.
- Focused feature set: no Wi-Fi multi-room or voice assistant: Marshall prioritizes sound and simple daily use.
Design and build
Stanmore III looks like a miniature Marshall stack amp: front grille, leather-wrapped sides, and a top panel with volume, bass, treble, source, play/pause, skip, and power. At 350 × 203 × 188 mm and 4.25 kg, it is a fixed home speaker: plan a sturdy shelf or side table near mains power.
Marshall uses 70% recycled plastic and plant-based (vegan) materials in this generation. The cabinet is not water-resistant, so keep drinks away from the grille and controls.
Setup and controls
Plug in, select Bluetooth on the source button, and pair from your phone. Download the Marshall Bluetooth app for Placement Compensation, deeper EQ, and firmware updates.
The top panel is the daily interface: three analog knobs for instant tone changes, plus play/pause and skip (new on Generation III). RCA and 3.5 mm inputs cover turntables with line output, streamers, and TVs with headphone or analog outs.
Sound and connectivity
Inside are a 50 W woofer amplifier and two 15 W tweeter amplifiers. Marshall tunes for energetic, guitar-forward playback: rock, blues, and dense mixes stay lively, while podcasts and dialogue are clearer than on Stanmore II.
Dynamic Loudness keeps tonal balance natural at low volume. Bluetooth 5.2 reconnects quickly on power-up; wired RCA and aux avoid compression for local sources.
Stanmore III vs Acton III vs Woburn III
| Model | Stanmore III | Acton III | Woburn III |
|---|---|---|---|
| Role | Mid-size living room | Compact desk / small room | Largest home speaker |
| Total power | 80 W | 60 W | 120 W |
| Max SPL | 97 dB @ 1 m | 95 dB @ 1 m | Higher headroom |
| Dimensions (W×H×D) | 350×203×188 mm | 260×170×150 mm | 400×255×230 mm |
| Weight | 4.25 kg | 2.85 kg | 8.0 kg |
| RCA input | Yes | No | Yes |
| HDMI | No | No | Yes (ARC) |
| Best for | Apartment living rooms, main bedroom systems | Desk, kitchen, tight spaces | Open plan, TV-centric setups |
Choose Marshall Acton III when space is tight. Step up to Marshall Woburn III for maximum output, RCA flexibility, and HDMI ARC for TV.
Who is Stanmore III for?
Buy Stanmore III if you:
- Want Marshall’s classic amp look with real volume for a living room
- Need RCA plus Bluetooth in one plug-in speaker
- Prefer physical bass/treble knobs and Placement Compensation over Wi-Fi complexity
- Listen mainly to rock, guitar-driven, and full-band recordings
Consider other options if you:
- Need a battery portable (see Marshall portable line in FAQ below)
- Want Wi-Fi multi-room or a built-in voice assistant
- Already own Stanmore II and only need a minor soundstage bump: Gen III is an upgrade, not a night-and-day change
Technical specifications
| Category | Value |
|---|---|
| Sound type | Stereo, bass-reflex |
| Frequency range | 45 Hz – 20,000 Hz |
| Amplification | 1× Class D 50 W (woofer) + 2× Class D 15 W (tweeter) |
| Max SPL | 97 dB @ 1 m |
| Bluetooth | 5.2, LE Audio ready · 10 m / 30 ft |
| Wired | 3.5 mm stereo aux · RCA stereo |
| Controls | Source, volume, bass, treble, play/pause, skip, power |
| Features | Dynamic Loudness, Placement Compensation, OTA updates |
| Wi-Fi / mic / voice / battery | No |
| Water resistance | No |
| Mains | 100–240 V, 50–60 Hz |
| In the box | Stanmore III speaker, power cable, user guide and safety documentation |
Source: Marshall Stanmore III official specifications.
Frequently asked questions
What is Marshall Stanmore III?
Marshall Stanmore III is a mid-size mains-powered home Bluetooth speaker in Home line III with 80 W output, RCA and 3.5 mm inputs, analog tone controls, and Placement Compensation.
Does Marshall Stanmore III have a battery?
No. Stanmore III is a plug-in home speaker with no built-in battery. For portable Marshall models, consider Marshall Emberton III.
Can I link multiple Stanmore III speakers for multi-room?
No. There is no Wi-Fi multi-room. One Stanmore III pairs to one Bluetooth source at a time; wired inputs are for local sources only.
How do I adjust the sound on Stanmore III?
Use the volume, bass, and treble knobs on top, or the Marshall Bluetooth app for EQ, Placement Compensation, and firmware updates.
Is Stanmore III water-resistant?
No. Keep liquids away from the speaker. It is designed for indoor shelf or table placement.
Can I use Stanmore III with a TV?
Yes, via 3.5 mm or RCA if your TV has analog audio out. For dedicated TV sound with HDMI ARC, Woburn III is the Home line III model with HDMI.
Where to buy authentic Marshall Stanmore III in Vietnam?
District M is an authorized Marshall retailer with 12-month warranty. Contact District M for color stock and comparisons with Acton III and Woburn III.
Conclusion
Marshall Stanmore III is the balanced Home line III pick: classic Marshall design, 80 W stereo, RCA flexibility, and Gen III soundstaging for everyday living-room listening. It fits buyers who want more room-filling energy than Acton III without moving to the largest Woburn footprint.
Marshall Stanmore III at District M
Authorized Marshall retailer in Vietnam. Compare Stanmore III with Acton III and Woburn III, or ask about Black, Cream, and Brown availability.
