This DSD DAC is dedicated to true audiophiles who want to listen the best vinyl like or reel-to-reel tape sound. Stiffelio DSD DAC is a single USB input and use a class A transformer coupled tube circuit plus a minimalist approach filter to remove carrier data from DSD streaming to obtain a natural pure analog output signal. With Stiffelio DSD DAC you can play all type of music files ( Flac, Iso, Dsf, Ape, Wave….) DSD64/DSD128 in DoP mode or in DSD Native mode up to DSD256. For PCM files 32bit and 384KHz is the max resolution. You can use all computer type ( Windows, Linux, MAC ) just set the software player ( Jriver, HQPlayer, Audirvana….) for DSD output.