Aim tti 0 56v 0 4a single power supply aim tti ql564p sii p the aim tti ql564p sii represents the next generation of laboratory power supplies offering an unparalleled level of precision and performance the voltage and current are controlled using 16 bit dacs enabling voltages to be set to 1mv resolution even at full output indeed the accuracy is sufficient for the psu to be used as a calibration source for some hand held dmms p p the aim tti ql564p sii uses pure linear tech