Dual Boilers - Both 1.9-liter brew and 3.6-liter steam boilers feature stainless steel construction and boiler insulation for excellent temperature management. Saturated Group - A fully-circulated water path keeps the group head temp-synced with the brew boiler, bringing added consistency to your shots. Pressure Profiling - Design shot profiles for long preinfusions or declining pressure—and anything in between. The R Nine One can be programmed for 5 pressure profiles or used manually. PID Controller - Electronic control over temperature provides easy adjustments for different coffees and intrashot stability. Volumetric Dosing - Program shot length by the milliliter for each pressure profile. Auto-on Timer - Set your R Nine One to wake up before you do! Program up to 2 heat cycles every day of the week. Sturdy Stainless Steel - A full-stainless case, frame, and portafilters bring a sturdy build—and a premium look—to your kitchen or bar setup. Specifications Model Number R Nine One Manufacturer Rocket Espresso Width 16.2 inches Depth 20 inches Height 17 inches Product Weight (lbs.) 112.0000 Watts 1600W Volts 120V Programmability Milk Temperature, PID, Pre-infusion, Profiles, Shot Time, Temperature Case Material Polished Stainless Steel Boiler Material Stainless Steel Cup Clearance 3.5 inches Boiler Volume 1.9 L Brew | 3.6 L Steam Reservoir Size 2.5 liter Solenoid Valve Yes Cup Warmer Yes Portafilter Size 58mm Available Portafilters Bottomless, Non-Pressurized Boiler Design Double Boiler Certified to NSF/ANSI Standards No Water Sources Convertible - Internal Reservoir or Plumbed in Auto On Yes Pre-Infusion/Aroma Yes Material Stainless Steel