The all-new Smart Control places effortless sound control and personalization for your Sennheiser headphones and the AMBEO Soundbar in the palm of your hand. With a fresh, modern design, Smart Control introduces exciting new features such as Sound Check to tailor the audio experience to individual hearing and Sound Zones that adapts the sound to your location. The app also provides user accounts to make it easier to enjoy sound your way on all your Sennheiser devices. - Smart Control app – Effortless sound control and personalization for Sennheiser headphones and the AMBEO Soundbar - Easy to use Equalizer – Quickly choose the perfect sound with intuitive EQ and presets - Sound Check – Guided process helps you find the best EQ setting for your personal hearing - Sound Zones – Automatically selects your preferred settings for your current location - Access to Noise Cancellation and Transparent Hearing functions – Intuitively activate and configure sound functions - A more personal user experience – New user accounts let you transfer settings between devices and enjoy a more relevant personalized experience - Discovery area – Catch up with relevant product news, updates from the world of Sennheiser, and access to the Sennheiser web store – all within the app - Detailed product information – Digital user manuals provide all you need to know wherever you go - Keep your product up-to-date – Smart Control provides the latest software and firmware updates for your product COMPATIBILITY: Sennheiser Smart Control currently works with MOMENTUM 4, MOMENTUM 3, MOMENTUM True Wireless 3, MOMENTUM True Wireless 2, CX400BT, MOMENTUM True Wireless, AMBEO Soundbar, PXC 550, PXC 550-II, CX150BT, CX350BT, HD458BT, HD350BT, HD450BT, HD450SE, CX True Wireless, CX Plus True Wireless more products to come.