I went from the a864 walkman to the z and I noticed the difference in sound quality immediately. The Z was more muddled and fatiguing, where the A was clean
crisp, and full with nice separation. Kinda disappointing really since I heard they have the same digital amps in them. I find with the z that less is more. I turn off all
of the sound enhancements and maybe use the eq. If I use any of the sound enhancements the eq changes dont seem to work. I noticed this before the ics update,
that the eq just seemed to make things louder and not better. That is, if I adjusted the treble I could hardly tell that I adjusted the treble, everything just seemed to be louder.
With the A if I adjusted the treble I could tell immediately the change. If only I could find a large capacity a series then I would sell the z.
have you tried 3rd party apps with Z? i find that playerpro works pretty well. to me the i didnt really like the stock sony player