Overview
- Marshall announced the Acton IV and Stanmore IV on Tuesday, July 7, and both models are available now from the company’s online store.
- The Acton IV is priced at $299.99 and the Stanmore IV at $399.99, with detailed specs published showing revised driver sizes, amplifier power and support for codecs including LDAC and LC3.
- Both speakers add upgraded tweeters with waveguides and redesigned, more aerodynamic bass ports that Marshall says widen the stereo soundstage and deliver cleaner bass.
- Marshall emphasized repairability by making knobs, feet and the front grille replaceable and using FSC‑certified MDF, and it has moved the power cord to the bottom so units can sit flush against a wall.
- Connectivity centers on Bluetooth Auracast for synced playback and compatibility with Marshall’s Heddon Wi‑Fi hub for multiroom streaming, but the speakers do not include built‑in Wi‑Fi or voice‑assistant support, and no Woburn IV was announced.