The Marshall Heston Sub 200 active subwoofer enhances low frequencies with a Bass Reflex system, passive radiator and SideFire side-firing drivers. Its frequency response is 30–150 Hz, and its Class D amplifier delivers 236 W RMS. Wireless connectivity is provided via Bluetooth, while the Marshall Bluetooth App supports Android 8.0 and later and iOS 16.0 and later.

Volume, crossover frequency and phase can be adjusted, while automatic power-on and standby make it easy to use. It can be wall-mounted.

• Type: Active subwoofer
• RMS power: 236 W
• Music power: 236 W
• Frequency response: 30–150 Hz
• Subwoofer driver diameter: 133.35 mm
• Enclosure type: Bass Reflex
• Volume control: Yes
• Automatic power-on and standby: Yes
• Crossover frequency adjustment: Yes
• Phase adjustment: Normal or inverted
• Connectivity: Bluetooth
• App: Marshall Bluetooth App
• App compatibility: Android 8.0 and later, iOS 16.0 and later
• Installation: Wall-mounted
• Colour: Brown
• Dimensions: 282 x 282 x 302.5 mm
• Weight: 7.62 kg
• Package contents: Rubber feet, audio cable, cinch-to-cinch cable, power cable, remote control, wall mount