i am using my JVC-HA-FX1200 and Sony XBA-A2 with the AP100 and the improvement of the iBasso D12 is minimal but when i switched it to my Audiogd NFB-10WM, the improvement is quite drastic.   have any of you guys tried doing any mod to the AP100? is there anyway to improve the AP100?

i have recently purchased an iBasso D12 to go with my AP100 using coaxial output from the DAP but was quite disappointed as i heard minimal improvement.   Anyone has tried this combination before?

i thought of an external DAC but i prefer an internal soundcard.....the USB audiophile cos a lot of problem cos it hangs my computer once a while.....the latency from the USB is too high .....i prefer to get an internal soundcard now......

i m currently using m-audio USB audiophile ....i chose this to the pci audiophile 9624 cos of the external power spupply suppose to supply a cleaner power i would like to upgrade the m-audio.what would u guys recommend .....i have 2 soundcard in mind ....the EMU 1212m and the RME...