Bezzera Magica Commercial Espresso Machine E61 Brewing Group E61 Group Head: The Magica has the very famous E61 group head which has been the golden standard for high end espresso machines for over 50 years. An E61 group head is heated using a thermosyphon system that circulates water through the group head keeping it very hot. The grouphead is controlled by raising the lever that activates the vibration pump and opens the group solenoid valve to deliver coffee. Once the desired quantity is reached, lower the lever to stop brewing.Heat-Exchanging Boiler: The Bezzera Magica is fitted with a 2 liter copper boiler with heat exchanger system. That means you can steam milk and extract espresso at the same time. High 1350-watt heating element is controlled by a thermostat to maintain a constant temperature. Professional Gauges: The Bezzera Magica has two manometers; first the standard boiler pressure indicator which is on all heat exchanger machines but it also has a second extraction manometer that measures the extraction pressure. This is a very handy tool when extracting espresso as it provides a window into the extraction. Joystick Style Knobs: This is the latest trend in the industry. Instead of using taps that have to be turned on and off the Magica features the instant on/instant off Joy Stick style wands. These are also nice because they cannot be over tightened.