The Sage Oracle Dual Boiler has a heat-up time of approximately 4 to 4.5 minutes, which is considered very fast and places it in the top category for dual boiler machines. The video states it's likely the fastest dual boiler they've ever measured and is comparable to thermoblock heaters in terms of speed. This is partly due to the group head preheating the portafilter.
This video provides an in-depth review of the Sage Oracle Dual Boiler espresso machine. The presenters discuss its features, design, performance, ease of use, and target audience. They compare it to other Sage models and highlight its strengths and weaknesses, particularly focusing on its automated functionalities, brewing consistency, and milk frothing capabilities.