Wonder if anyone has compared the two phono stages as listed? I am considering an upgrade to my old NAD receiver used as phono stage. I have a Rega P2 with R250 tone arm with Dynavector 10x5 cartridge (seems to synergize with P75). But I am also using a Jolida 1501 hybrid integrated amp. (seems to synergize with JD9A). thanks in advance.