Slayer Espresso Single Group

The Espresso Single Group is Slayer's single-group machine built around the company's patented needle valve, meant to restrict water flow and produce distinct flavor profiles even at finer-than-usual grind settings. The manufacturer lists it at 47 x 58 x 33 cm (W x D x H) for 50 kg, with single-phase power stated across two standards: 120V/60Hz/1.6kW for the 110V version and 220-240V/50-60Hz/2.1-2.4kW for the international version.

The machine separates the brew tank, 1.1 liters and 600 watts with PID control, from the steam tank, 3.3 liters with a 1,300 or 2,000 watt element depending on configuration, so the two can hold independent temperatures. A three-position actuator on the group lets you shift water flow rate mid-shot, while a rotary vane pump gets to pressure quickly and can also draw from an external reservoir.

An optional removable drip tray allows use without a fixed water connection. The manufacturer does not specify pre-infusion type, portafilter diameter, warm-up time, or the pump's operating pressure in bar: figures that remain to be verified elsewhere.