when i substitute another digital source in place of the ps audio combo, the "hot treble" or thinness in the highs disappears. thus, i would think that the problem is either the transport, dac or both. i have a variety of cables. one is gold, one is copper and one is continuous cast silver, the neotech nei-1002. i find using the gold ic as a coax digital cable, with the mojo audio copper ic helps.
incidentally, as i said, it was the technician who suggested that i replace the caps and use carbon fiber resistors, and discouraged me from upgrading to level two, with either firmware choices.
there exist caps which can alter the spectral balance.
i should also note that one of my cd players is a better transport for 16 bit discs than the ps audio transport. my settings for the dac include filter 5 , coax and native 44.1 sampling rate.
incidentally, as i said, it was the technician who suggested that i replace the caps and use carbon fiber resistors, and discouraged me from upgrading to level two, with either firmware choices.
there exist caps which can alter the spectral balance.
i should also note that one of my cd players is a better transport for 16 bit discs than the ps audio transport. my settings for the dac include filter 5 , coax and native 44.1 sampling rate.