Marshall’s legendary rock-and-roll DNA meets 50 hours of battery life in the Kilburn III, a mid-sized Bluetooth speaker built for portable greatness. Rugged yet refined, it builds upon the Kilburn II with a larger battery, IP54 resistance, revamped 360° stereo, and amp-style aesthetics.

The big headline? 50‑hour battery life—double that of its predecessor and more than many rivals, including Sonos Move 2 and Bose SoundLink Max. That longevity allows you to camp, tailgate, or relax at home without worry. Additionally, it doubles as a power bank via USB-C, allowing you to charge your phone on the go.

Audio-wise, the Kilburn III sounds clean and bold, with deep bass, crisp mids, and bright treble that rock across various genres—whether house, rock, or classical. A reengineered amp delivers full, engaging sound that fills rooms effortlessly.

Custom tuning is easy, thanks to tactile knobs and the Marshall app’s five-band EQ, EQ presets, and Placement Compensation, which optimize sound for your space.

Built tough with IP54 dust/water resistance, cool gold control panel, dual speaker grilles, and a plush red‑velvet strap, the Kilburn III isn’t just functional—it’s a style statement.

At $379, it costs more than the Kilburn II launch but justifies the premium with seismic improvements in battery, sound, and looks. If you’re looking for a statement speaker with pro-level performance, the Kilburn III hits every note. Just pack a rain cover for beach days.

For more from Marshall, check out the Marshall Heston 120 Soundbar.