There are many differences between the original Pearl, Acaia’s original scale model, and the Pearl Model S. The Pearl S has a higher weighing capacity than the original Pearl, which makes it a bit more durable. The Pearl has a max capacity of 2000 g while the Pearl Model S has a max capacity of 3000 g. The S model also comes with a new dot-matrix display that can show more on the screen, such as a recipe.
The modes that are available are similar to the original Pearl but include parameters like flow rate in real-time. The Pearl 2021 has the option of adding a flowrate indicator to three different modes for brewing.
There are also specific modes on the Pearl Model S such as Flowrate practice mode and Portafilter mode for training and bar work purposes that include the water flow as part of the main mode display.
The inside of the Pearl Model S is also reinforced with additional metal components (making it heavier than the Pearl), while also containing a larger battery to accommodate the added features.
See the video ahead for a more detailed explanation of modes and settings.
Here is an additional video explaining the Pearl Model S by Prima Coffee.
To see a comparison between the Pearl, Pearl 2021, and the Pearl Model S, please see this comparison article here.