The GT SONIC-T6 is where the T series becomes a batch tool. The 300 x 150 x 150 mm tank holds six litres, enough for a rack of test tubes, a tray of dental instruments, a set of carburettor bodies, pump components, small gearbox parts or a stack of PCB panels. 150 W of ultrasonic power at 40 kHz is distributed across the floor so a full basket cleans in one pass, and the 300 W heater brings six litres to working temperature far faster than the smaller elements in the series.