Marshall Stanmore IV - Black - Cream - Cream

Description

The Mid-Sized Home Audio Hub

The Marshall Stanmore IV sits at the center of the brand's home speaker lineup, balancing serious room-filling output with a footprint that still fits comfortably on a bookshelf or media console. Unlike portable models, this speaker relies on constant AC mains power to feed its internal amplifiers with unrestricted current. It brings the iconic visual language of stage amplifiers—brass control knobs, textured vinyl cladding, and the script logo—straight into the living room, acting as a dedicated stereo listening station that commands both visual and acoustic attention.

Class D Tri-Amplified Stereo Sound

At the core of the speaker is a 110-watt Class D amplification block divided into three discrete channels. A dedicated 60-watt amplifier drives the front-firing 5-inch woofer to anchor the rhythm section, while two independent 25-watt amplifiers power the 0.75-inch tweeters. Marshall engineered these tweeters with new outward-angled waveguides, which deliberately disperse high frequencies to create a wider stereo image than a single-box enclosure typically allows. The resulting sound signature reaches from a deep 36 Hz up to 38,000 Hz with excellent midrange articulation.

Refined Bass Reflex and Room Placement

Delivering impactful low frequencies from a compact cabinet requires careful acoustic management. Marshall redesigned the bottom-firing bass reflex port to minimize aerodynamic noise and turbulence at high volumes, ensuring the bass remains tight rather than boomy. This revision also makes the speaker less sensitive to boundary interference, allowing you to place it almost flush against a wall. If the room acoustics are still challenging, the placement compensation feature in the Marshall app uses your phone to measure and automatically adjust the speaker's internal EQ for your exact space.

Bluetooth 5.3 and Auracast Integration

Wireless streaming operates on the Bluetooth 5.3 protocol, supporting advanced codecs like LDAC and LC3 alongside standard AAC and SBC for high-resolution audio transmission. Multipoint connectivity lets two devices stay paired simultaneously, making it easy to share DJ duties without disconnecting. The inclusion of Auracast™ technology means the speaker is ready for the next generation of broadcast audio, allowing you to sync playback across multiple compatible devices or integrate it with the Marshall Heddon music streaming hub for a synchronized multi-room setup.

Tactile Controls and Analog Inputs

Interacting with the speaker remains a deeply physical experience. The brass top panel features dedicated rotary knobs to manually adjust volume, bass, and treble levels without reaching for a phone. A customizable M-button adds a layer of modern convenience, configurable to toggle a favorite EQ preset or instantly launch a playlist via Spotify Tap. For analog sources, the back panel offers stereo RCA inputs perfectly matched for an external phono preamplifier and turntable, while the top-mounted 3.5 mm auxiliary jack handles quick wired connections.

Frequently Asked Questions (FAQ)

How does it differ from the Stanmore III?

The Stanmore IV brings several significant technical upgrades over the Stanmore III. On the acoustic side, total power jumps from 80 W (2 x 15 W + 50 W) to 110 W thanks to a tri-amplified architecture. Frequency response extends from 45 – 20,000 Hz up to 36 – 38,000 Hz, delivering both deeper bass extension and higher treble resolution. On the connectivity side, the Bluetooth module moves from version 5.2 to 5.3 with the addition of Auracast™ technology, multipoint pairing, and the high-resolution LDAC and LC3 codecs. The Stanmore IV also adds a customizable M-button and a room placement compensation feature via the companion app.

Does this speaker have a built-in battery for portable use?

No. The Stanmore IV is strictly a home speaker and requires a constant connection to an AC wall outlet via the included mains lead. This constant power supply is what enables its robust 110-watt amplification and 97 dB maximum SPL, ensuring dynamic headroom that battery-powered portable speakers cannot match.

What is the purpose of the M-button on the control panel?

The M-button is a customizable shortcut designed for rapid access to your favorite features without opening the companion app. Through the Marshall application, you can assign this button to instantly load your preferred custom EQ preset, or configure it to launch Spotify Tap to immediately resume playing music from your account.

What's in the Box

Marshall Stanmore IV speaker

Mains lead

Quick start guide

Legal and safety information