Topping D90 III Discrete: PSRM DAC module
The D90 III Discrete uses a 16 phases PSRM module per channel for its digital-to-analogue conversion. The PSRM modules are 1-bit discrete DACs that use an ultra-fast switching logic network. The components selected by Topping were chosen for their ability to minimise the disturbance that could be caused by the power supply. Because of the technology used, the accuracy of the conversion is highly dependent on the quality of the power supply. So, in order to obtain the best possible results, the brand has also developed a resistor power supply system that produces no noise. The D90 III Discrete DAC is capable of converting PCM up to 32bit 768kHz and DSD up to DSD512 with a dynamic range of 130dB, a signal-to-noise ratio of 131dB and a harmonic distortion rate of 0.00006%.