How we scoreBlogAdvertise
Amidioheadphones · speakers · earbuds
  1. Amidio
  2. Compare
  3. Acton IV vs Stanmore IV

Marshall Acton IV vs Marshall Stanmore IV

What Acton IV does better (1) and where Stanmore IV wins (2) — every spec side by side.

Marshall Acton IV
Marshall · 2026Acton IV
8.7Score
1 advantage≈ $300
vs
Marshall Stanmore IV
Marshall · 2026Stanmore IV
8.8Score
2 advantages≈ $420
Higher score
9.4Sound9.5
4.9Connectivity4.9
Dimensions

Size comparison

Acton IVStanmore IV
260 × 171150350 × 203185
Acton IVStanmore IVDifference
Height171 mm203 mm−32 mm
Width260 mm350 mm−90 mm
Depth150 mm185 mm−35 mm
Weight2,650 g3,990 g−1,340 g

Drawn to the same scale from the official dimensions (front and side).

Why is Acton IV better than Stanmore IV?

  1. Weight2,650 g vs 3,990 g+51%

Why is Stanmore IV better than Acton IV?

  1. Driver size101.6 mm vs 127 mm+25%
  2. Lowest frequency37 Hz vs 36 Hz+3%
Specifications

Side by side

Sound
Driver typeDynamicDynamic
Driver size101.6 mm127 mm
Output power110 W110 W
Speaker channelsStereoStereo
Channel count22
Lowest frequency37 Hz36 Hz
Highest frequency38,000 Hz38,000 Hz
Hi-Res AudioYesYes
Adjustable equaliserYesYes
StereoYesYes
Battery & charging
Mains poweredYesYes
Battery powered (portable)NoNo
Connectivity
WirelessYesYes
Bluetooth version5.35.3
Bluetooth codecsLDAC, LC3, AAC, SBCLDAC, LC3, AAC, SBC
Hi-res codec (LDAC / aptX HD / LHDC)YesYes
aptXNoNo
LDACYesYes
Multipoint (two devices)YesYes
LE AudioYesYes
AuracastYesYes
3.5 mm jack / AUXYesYes
Smart & streaming
Spotify ConnectYesYes
Companion appYesYes
Design & build
Weight2,650 g3,990 g
Width260 mm350 mm
Height171 mm203 mm
Depth150 mm185 mm
Features
Party / stereo pairingYesYes
To compare: 0up to 4 models
Compare