Marshall Stanmore IV vs Marshall Acton II

Last updated: October 5, 2026

Short answer: the Marshall Stanmore IV. It ranks #8 of 20 powered desktop speakers by sound quality (rated 3.8/5) at $429.99 and is still sold new; the Marshall Acton II ranks #16 (rated 3.5/5) and is discontinued, so it is only an option used.

Marshall Stanmore IV vs Marshall Acton II

What the Marshall Stanmore IV does well: A 5 inch woofer on a 60W amplifier and two 0.75 inch tweeters on 25W each, now with waveguides and a redesigned bass port, and Marshall rates it down to 36Hz. It supports LDAC Bluetooth, which the Marshall Acton II lacks. It links with other speakers (Auracast), which the Marshall Acton II cannot. The tradeoff: No independent measurements or side by side comparisons against speakers we rank have been published yet, so it can’t be ranked.

What the Marshall Acton II does well: Marshall Acton II uses 4” (midrange/woofer), 1x 4” midrange, 2x 0.75” Dome tweeters. The tradeoff: Bass is limited by its 56Hz specification.

Buy the Marshall Stanmore IV. It is rated higher for sound quality and still sold new, while the Marshall Acton II is discontinued.

Want more options? Browse the full Powered Home rankings.

Specifications Side By Side

Marshall Stanmore IV Marshall Acton II
Price$429.99 each$195.60 each Discontinued
Ranked#8 of 20 in Medium Size Powered Desktop Speakers#16 of 20 in Medium Size Powered Desktop Speakers
AES InputNoNo
Amplifier Power110W (woofer 60W, tweeters 2x 25W)50W (Woofer: 25W, Tweeters: 2x12.5W)
AppYes (Marshall)Yes
Aux InputYesYes
Battery LifeNo BatteryNo Battery
BluetoothYesYes
Bluetooth CodecsSBC, AAC, LDAC, LC3SBC, aptX
Bluetooth Version5.35.0
Built-in MicrophoneNo-
Cabinet Colorblack, cream-
Coaxial InputNoNo
Dimensions8”H x 13.8”W x 7.3”D (203 x 350 x 185 mm)10.2” x 6” x 5.9” (260 x 153 x 150 mm)
Drivers1x 5” woofer + 2x 0.75” tweeters with waveguides4” (midrange/woofer), 1x 4” midrange, 2x 0.75” Dome tweeters
EQYes (bass/treble knobs, app EQ, room calibration)Yes (Bass/Treble)
Frequency Response36Hz - 38kHz (Manufacturer specified)50Hz - 20kHz (Manufacturer specified)
HDMI InputNoNo
IP RatingNoneNone
InputsBluetooth, RCA, 3.5mm auxBluetooth, Aux
Maximum SPL97dB at 1m (Manufacturer specified)-
Optical InputNoNo
Party ModeYes (Auracast)No
Power BankNoNo
Power InputAC Power cord-
RCA InputYesNo
StereoPartially (1 woofer)Partially (1 woofer)
TRS InputNoNo
TWSNoNo
USB InputNoNo
Weight8.8 lbs (3.99 kg)6.4 lbs (2.9 kg)
Wi-FiNoNo
Woofer Cabinetportedported
XLR InputNoNo
Bass Extension (-10dB)-56Hz
Voice Assistants-None

How Marshall Stanmore IV compares with other leading options:

Prices on this page were last checked October 4, 2026 at 9:58 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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The Two Speakers In Full

Marshall Stanmore IV: $429.99 each Estimated Amazon eBay

Marshall Stanmore IV ranking card

Older models: the Marshall Stanmore III (ranked higher, rated 3.8/5) and the Marshall Stanmore II (ranked lower, rated 3.7/5).

Smaller model: the Marshall Acton IV (estimated 3.7/5).

Pros: A 5 inch woofer on a 60W amplifier and two 0.75 inch tweeters on 25W each, now with waveguides and a redesigned bass port, and Marshall rates it down to 36Hz. Bluetooth 5.3 with SBC, AAC, LDAC and LC3, multipoint, Auracast for linking more speakers, and both 3.5 mm aux and RCA inputs for a turntable. The Marshall app adds EQ and room calibration, and the new M-button jumps to a saved EQ or Spotify Tap.

Cons: No independent measurements or side by side comparisons against speakers we rank have been published yet, so it can’t be ranked. One woofer serves both channels, so its stereo is limited to the tweeters. It needs mains power, with no battery, and it has no Wi-Fi streaming and no microphone for voice control.

AES InputNo
Amplifier Power110W (woofer 60W, tweeters 2x 25W)
AppYes (Marshall)
Aux InputYes
Battery LifeNo Battery
BluetoothYes
Bluetooth CodecsSBC, AAC, LDAC, LC3
Bluetooth Version5.3
Built-in MicrophoneNo
Cabinet Colorblack, cream
Coaxial InputNo
Dimensions8”H x 13.8”W x 7.3”D (203 x 350 x 185 mm)
Drivers1x 5” woofer + 2x 0.75” tweeters with waveguides
EQYes (bass/treble knobs, app EQ, room calibration)
Frequency Response36Hz - 38kHz (Manufacturer specified)
HDMI InputNo
IP RatingNone
InputsBluetooth, RCA, 3.5mm aux
Maximum SPL97dB at 1m (Manufacturer specified)
Optical InputNo
Party ModeYes (Auracast)
Power BankNo
Power InputAC Power cord
RCA InputYes
StereoPartially (1 woofer)
TRS InputNo
TWSNo
USB InputNo
Weight8.8 lbs (3.99 kg)
Wi-FiNo
Woofer Cabinetported
XLR InputNo

Marshall Acton II: $195.60 each Discontinued eBay

Marshall Acton II ranking card

Newer model: the Marshall Acton IV, estimated 3.7/5.

Pros: Marshall Acton II uses 4” (midrange/woofer), 1x 4” midrange, 2x 0.75” Dome tweeters. Its 2.9 kg, aux input and limited-stereo playback make it a practical option for its intended room or portable use. Measured bass extension of 56Hz (-10dB).

Cons: Bass is limited by its 56Hz specification. Discontinued.

AES InputNo
Amplifier Power50W (Woofer: 25W, Tweeters: 2x12.5W)
AppYes
Aux InputYes
Bass Extension (-10dB)56Hz
Battery LifeNo Battery
BluetoothYes
Bluetooth CodecsSBC, aptX
Bluetooth Version5.0
Coaxial InputNo
Dimensions10.2” x 6” x 5.9” (260 x 153 x 150 mm)
Drivers4” (midrange/woofer), 1x 4” midrange, 2x 0.75” Dome tweeters
EQYes (Bass/Treble)
Frequency Response50Hz - 20kHz (Manufacturer specified)
HDMI InputNo
IP RatingNone
InputsBluetooth, Aux
Optical InputNo
Party ModeNo
Power BankNo
RCA InputNo
StereoPartially (1 woofer)
TRS InputNo
TWSNo
USB InputNo
Voice AssistantsNone
Weight6.4 lbs (2.9 kg)
Wi-FiNo
Woofer Cabinetported
XLR InputNo
Top PickMarshall Stanmore IVAmazon • $429.99
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