The Marshall Stanmore IV, released in July 2026, represents a strategic evolution in home audio, focusing on enhanced acoustic architecture and high-resolution streaming capabilities rather than smart-home integration. According to TechRadar’s testing, the unit features a 5-inch woofer with 60W amplification and two 0.75-inch tweeters, providing a more expansive soundstage than its predecessor and the smaller Acton IV.
Acoustic Engineering and Sound Performance
The core performance upgrade in the Stanmore IV lies in its internal volume and driver configuration. TechRadar reports that the larger cabinet, paired with the 5-inch woofer, allows the speaker to reach frequencies as low as 38 Hz. This provides a measurable improvement in sub-bass depth compared to the Acton IV, which shares similar design DNA but lacks the physical displacement capacity of the larger model.
The integration of LDAC codec support marks a significant shift, enabling high-resolution audio streaming over Bluetooth. During testing, this protocol revealed subtle vocal nuances in tracks such as Allie X’s “Black Eye” that were previously obscured. Furthermore, Marshall’s updated “Dynamic Loudness” technology maintains tonal balance at higher volume levels, minimizing the compression often found in smaller, portable Bluetooth speakers.
Did you know?
The Stanmore IV utilizes a five-band equalizer within the Marshall app, allowing users to save three distinct profiles that can be toggled instantly using the physical “M-button” on the speaker’s top panel.
Connectivity Limitations and Market Position
Despite advancements in audio fidelity, the Stanmore IV omits Wi-Fi connectivity. The absence of built-in voice assistants, such as those found in the Sonos Era 100 or Bose Lifestyle Ultra, positions the Stanmore IV as a dedicated music-first device rather than a smart-home hub.
The physical interface remains a key differentiator. Marshall continues to utilize tactile, analog-style controls for bass and treble adjustment, catering to users who prefer physical feedback over app-only menus. The inclusion of RCA and 3.5mm inputs ensures compatibility with legacy hardware, such as turntables, maintaining the brand’s appeal to the vinyl-enthusiast demographic.
Competitive Comparison: Stanmore IV vs. Market Alternatives
Positioned at 4,399 SEK, the Stanmore IV occupies a premium middle ground. When compared to the Denon Home 400, the Stanmore IV is noted for delivering a more aggressive, powerful sound profile at a lower price point. While the Sonos Roam 2 offers superior smart-home ecosystem integration, the Stanmore IV provides a more expansive stereo image and a distinct aesthetic that functions as a piece of furniture.
| Feature | Stanmore IV Performance |
|---|---|
| Bass Response | Down to 38 Hz |
| Connectivity | Bluetooth 5.3, RCA, 3.5mm |
| Weight | 4 kg |
Frequently Asked Questions
Does the Marshall Stanmore IV support Wi-Fi?
No, the Stanmore IV relies on Bluetooth 5.3 and physical wired connections (RCA/3.5mm) for audio input. It does not support Wi-Fi streaming.
How does it differ from the Marshall Acton IV?
The Stanmore IV features a larger cabinet and a more powerful 5-inch woofer compared to the Acton IV, resulting in better bass depth and a more convincing stereo image at high volumes.
Can I use the Stanmore IV with a turntable?
Yes, the inclusion of RCA inputs allows for direct connection to most turntables, provided they have a built-in or external phono preamp.
Pro Tip: To get the best sound from your Stanmore IV, use the “Placement Compensation” feature in the Marshall app to tune the audio output based on whether the speaker is placed against a wall or in an open area.
Have you tested the latest Marshall lineup? Share your thoughts on the balance between analog design and digital streaming in the comments below.
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