Marshall Stockwell III Black and Brass

Key features of the Marshall Stockwell III Black and Brass Bluetooth speaker

True Stereophonic 360° sound

The Marshall Stockwell III uses True Stereophonic technology for multi-directional 360° sound delivery around the speaker. The sound system consists of one 3" woofer and two 1.75" full-range dynamic drivers with a frequency range of 54Hz to 20kHz. A 16W Class D amplifier powers the woofer, and each full-range driver has its own 14W Class D amplifier. The maximum sound pressure level reaches 86dB SPL at a distance of 1 metre. The Dynamic Loudness feature adjusts the bass and treble according to the set volume to maintain a clear and balanced sound.

Over 40 hours of playtime and IP55 resistance

The replaceable Li-Ion battery provides over 40 hours of portable playtime on a single charge. With a 30W USB-C PD charger, a 20-minute charge is enough for another 7 hours of playtime, and a full charge takes less than 3 hours. The Battery Preservation feature offers settings designed to extend battery life, and the battery itself can be replaced by the user. The IP55 rating ensures resistance to dust and water splashes, and the speaker comes with a strap for easier carrying. The Stockwell III weighs 1.3kg and its dimensions are 180×162×74mm.

Bluetooth 5.3, Auracast and controls

Wireless connectivity is provided by Bluetooth 5.3 with a range of up to 10 metres, Auracast technology and multipoint connection support. Supported audio codecs include SBC, LC3 and MPEG-2 AAC. For wired connections, 3.5mm AUX and USB-C ports are available, with the USB-C port also supporting charging for other devices with a 5V/3A output. The top panel offers controls for bass, treble, and volume, along with a power switch, Media Jog, M-button and Bluetooth button. The M-button gives you quick access to a set preset, and the Media Jog is used to control track playback.