La Marzocco GS3 MP

The GS3 MP is a dual-boiler, single-group machine: a 1.5-liter boiler for coffee and a 3.5-liter boiler for steam, kept separate, feeding an exposed saturated group instead of one tucked behind panels. Pre-infusion is controlled by hand, with a mechanical paddle lever that the user moves through the extraction. The pump sits inside the chassis. A pre-heating system brings the water close to coffee-boiler temperature before it gets there, and insulated boilers help hold the temperature while cutting energy use.

A dual PID governs coffee and steam boiler temperatures separately. Two front-facing gauges, one per boiler, read each one's pressure. A built-in 3.5-liter tank keeps the machine self-contained on water, with a fixed connection available as an option.

The portafilter and baskets are stainless steel. The manual's daily routine includes backflushing the group with cleaning product and a blind filter, washing baskets and portafilter with water or detergent, and wiping the steam and hot-water wands with a damp cloth after each use; periodically, the boilers need draining and the water tank needs cleaning out. It's a machine for someone who'd rather control pre-infusion by hand on the paddle.