DeejayAlex73
100+ Head-Fier
Perhaps the site where you can choose the pairing is this?Amp8 costs $200, When you buy the dap it comes with amp1mkii. Most, including myself, have found the stock amp to be more than adequate.
https://www.extrasound.it/lettore-hi-res-pcm-32bit-384khz-dsd512-dx220-ibasso-detail