Harman Kardon Invoke review: The first Cortana speaker sounds amazing

Smart speakers are everywhere this year. So far, we've seen new entries from Apple, Amazon, Google and Sonos. Now, Microsoft is finally ready to join the party. The Harman Kardon Invoke is the first speaker to feature Microsoft's Cortana virtual assistant. Since it's coming from a brand known for audio gear, it promises better sound than the competition.