In the Smart Speaker category we show a comparative table between Amazon Echo Plus and Harman Kardon Invoke. Amazon Echo Plus has a less powerful speaker than Harman Kardon Invoke. Harman Kardon Invoke is more cumbersome than Amazon Echo Plus. Amazon Echo Plus is certainly lighter than Harman Kardon Invoke. The first product (Amazon Echo Plus) is more expensive than the second. The first product is based on Alexa and the second on Cortana. Below we find more information on various aspects between Amazon Echo Plus and Harman Kardon Invoke. Published data is always indicative and may contain errors or be subject to change. Always check official sources.