This speaker is known as the rolls Royce of Bluetooth speakers. It has an incredible clear sound that can’t be beat. It’s bowers and Wilkins made, so it is the highest end of audio you can get for 400$ I’m selling it cause I only use it as a desktop speaker and I feel it can get more use out of it. Also if you buy another you can hook them up together to get stereo speakers. Asking $400 because they are worth around $900 and you can’t get them anywhere anymore.