Marshall Middleton Black & Brass Portable Speaker

Marshall Middleton Black and Brass — Loudest Portable Speaker in the Line-Up

The Marshall Middleton Black and Brass is the brand's most powerful portable Bluetooth speaker, built for listeners who want concert-grade volume in a grab-and-go enclosure. Inside the iconic amp-inspired shell sits a quad-speaker array that pushes out true stereo with no sweet-spot compromise, while Dynamic Loudness adjusts the tonal balance as volume changes.

True Stereophonic 360° Sound and Quad-Driver Architecture

What separates this model from typical mono Bluetooth speakers is Marshall's True Stereophonic processing — a multi-directional stereo technique that fills the space around the unit. The quad-speaker layout pairs two 3\" woofers with two 3/5\" tweeters and two passive radiators in a sealed cabinet. Stack Mode links multiple compatible Marshall speakers for a bigger soundstage.

Key Specs — Power, Battery, Connectivity, and Durability

Sixty watts of output, a 20-hour battery, and an IP67 rating mean the Middleton survives beach days, hikes, and kitchen spills without missing a beat.

• A total output power of 60 W easily fills a medium-sized room or outdoor gathering.
• Battery Life: 20+ hours per charge, with 20 minutes of quick charging delivering 2 hours of playback.
• Bluetooth: 5.1 with a 10 m wireless range, plus a 3.5 mm aux input and USB-C charging.
• Frequency Range: 50 Hz – 20 kHz — covers deep bass impact and clean high-frequency detail.
• IP Rating: IP67 dust- and waterproof — tested to survive submersion in 1 m of water for up to 30 minutes, so a sudden rainstorm or a drop in the pool won't end the party.
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Who Should Buy the Middleton

Music lovers who need the signature sound of the brand in a portable package will find this model a natural fit. The IP67 rating makes it equally at home by the pool, on a campsite, or in the kitchen. Stack Mode and the dedicated app add flexibility for users who want to expand their setup over time.

Heritage and Design

The manufacturer has been building stage amplifiers since the 1960s, and the product carries that legacy into the portable Bluetooth era. Designed and engineered in Sweden, the speaker blends the brand's iconic guitar-amp aesthetic — brass accents, black vinyl, and a tactile control knob — with modern wireless tech and a detachable carry strap for grab-and-go use.