The GT SONIC-T20 steps up to a 500 x 300 x 150 mm tank, giving twenty litres of working volume and a long shallow working area that suits trays of parts laid out side by side. Complete cylinder heads from small engines, brake calipers, transmission valve bodies, pump assemblies, optical benches and full racks of machined parts fit with room to spare, and 400 W of ultrasonic power at 40 kHz is spread across the whole floor so a loaded tray cleans evenly. The 500 W heater holds