Marshall Acton III vs Marshall Stanmore III

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Acton III compared with Stanmore III

	MarshallActon III	MarshallStanmore III
Overview
Released
Released	June 2022	June 2022
Sound
Type
Type	Speaker	Speaker
Channels
Channels	Stereo	Stereo
Dolby Atmos
Dolby Atmos	No	No
Drivers
Drivers	One woofer and two tweeters angled outwards, with updated waveguides; bass-reflex cabinet	One woofer and two tweeters angled outwards, with updated waveguides; bass-reflex cabinet
Amplifiers
Amplifiers	One 30 W class D for the woofer, two 15 W class D for the tweeters	One 50 W class D for the woofer, two 15 W class D for the tweeters
Frequency response
Frequency response	45 Hz – 20 kHz; up to 95 dB at 1 m	45 Hz – 20 kHz; up to 97 dB at 1 m
Room tuning
Room tuning	Placement Correction in the Marshall Bluetooth app; Dynamic Loudness; bass and treble knobs on the speaker	Placement Correction in the Marshall Bluetooth app; bass and treble knobs on the speaker
Connections
Wi-Fi
Wi-Fi	No	No
Bluetooth
Bluetooth	Yes	Yes
AirPlay
AirPlay	No	No
HDMI eARC
HDMI eARC	No	No
Voice assistants
Voice assistants	None	None
Bluetooth
Bluetooth	Bluetooth 5.2, LE Audio-ready; 10 m range	Bluetooth 5.2, LE Audio-ready; 10 m range
Ports
Ports	3.5 mm in, mains power	RCA in, 3.5 mm in, mains power
Multi-room
Multi-room	None; Marshall says it can't be used in pairs or groups	None; Marshall says it can't be used in pairs or groups
App
App	Marshall Bluetooth app (iOS and Android), with over-the-air updates	Marshall Bluetooth app (iOS and Android), with over-the-air updates
Design
Weight
Weight	2.85 kg (better)	4.25 kg
Controls
Controls	Source button, volume, bass and treble knobs, play/pause and skip control, power switch	Source button, volume, bass and treble knobs, play/pause and skip control, power switch
Microphones
Microphones	None	None
Size
Size	260 × 170 × 150 mm	350 × 203 × 188 mm (W × H × D)
Colours
Colours	Black, Cream, Brown, Midnight Blue, Burgundy	Black, Cream, Brown
In the box
In the box	Acton III, mains lead, user manual and legal and safety information	Stanmore III, mains lead, user manual and legal and safety information