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PS Audio Stellar Strata MK2 Integrated Amplifier Review

Testing the preamplifier by itself and using the RCA digital input jack, the results of activating the three available digital filters on the frequency response with 16/44.1 sampling are shown below in Figure 21. The digital input was 0 dBFS which means full DAC analog output into the preamplifier section, The Volume was set to 48. Each filter delivers a different roll-off response at 20 kHz. You just need to try them all to see which one you prefer. Filter 2 gives the most high-frequency roll-off, and this will make the sound a bit smoother. Since this Class D amplifier has quite a bit of high frequency distortion, start with Filter 2, and then switch to the others, using music that has a lot of high frequencies, such as violins.

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