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  3. Acton IV vs MONITOR III A.N.C.

Marshall Acton IV vs Marshall MONITOR III A.N.C.

What Acton IV does better (4) and where MONITOR III A.N.C. wins (2) — every spec side by side.

Marshall Acton IV
Marshall · 2026Acton IV
8.9Score
4 advantages≈ $300
Higher score
vs
Marshall MONITOR III A.N.C.
Marshall · 2024MONITOR III A.N.C.
8.8Score
2 advantages≈ $300
5.0Connectivity6.1

Why is Acton IV better than MONITOR III A.N.C.?

  1. Hi-res codec (LDAC / aptX HD / LHDC)Yes · MONITOR III A.N.C.: No
  2. Driver size101.6 mm vs 32 mm3.2×
  3. LDACYes · MONITOR III A.N.C.: No
  4. Highest frequency38,000 Hz vs 20,000 Hz+90%

Why is MONITOR III A.N.C. better than Acton IV?

  1. Weight2,650 g vs 250 g10.6×
  2. Lowest frequency37 Hz vs 20 Hz+85%
Specifications

Side by side

Sound
Driver typeDynamicDynamic
Driver size101.6 mm32 mm
Output power110 W—
Speaker channelsStereo—
Channel count2—
Lowest frequency37 Hz20 Hz
Highest frequency38,000 Hz20,000 Hz
Impedance—35 Ω
Hi-Res AudioYes—
Adjustable equaliserYesYes
StereoYes—
Noise control
Active noise cancelling—Yes
Transparency / ambient mode—Yes
Battery & charging
Battery life—100 h
Battery life with ANC—70 h
Charging time—2.5 h
Mains poweredYes—
Battery powered (portable)No—
Connectivity
WirelessYesYes
Bluetooth version5.35.3
Bluetooth codecsLDAC, LC3, AAC, SBCLC3, AAC, SBC
Hi-res codec (LDAC / aptX HD / LHDC)YesNo
aptXNoNo
LDACYesNo
Multipoint (two devices)YesYes
LE AudioYesYes
AuracastYes—
USB-C—Yes
3.5 mm jack / AUXYesYes
Smart & streaming
Spotify ConnectYes—
Companion appYes—
Design & build
Weight2,650 g250 g
Width260 mm—
Height171 mm—
Depth150 mm—
Foldable—Yes
Features
Hands-free calls—Yes
Party / stereo pairingYes—
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