If anyone is interested, my impressions of the Oriolus mk2 with various IEM cables: PW Audio No.5: Warm cable with smooth mids and highs. Great for male vocals. A bit too warm if paired with a warm source. Effect Audio Ares II+: An energetic warmth. Upper-mids and lower treble have more emphasis, giving the mk2 extra energy. Lovely with female vocals. Overall bass is tighter. My favorite pairing so far. (Musictek is selling the mk2 with the regular Ares II for free btw) Effect Audio Thor II: A clinical type of warmth. Has a boosted mid-bass and a leaner midrange in comparison. Treble is clear and effortless. Better overall resolution and air compared to the other copper cables above. Would have been my favorite if it weren't for the leaner vocals, which hurt male vocals on certain songs (through the warmer AMP8, and especially the more neutral AMP4). Source: DX200 AMP4 and AMP8. Eartips: Acoustune AET07 (medium) Next cable I plan on trying is the Effect Audio Lionheart. Should be in-between the Ares and Thor in tone. My last resort is the Ares II 8-wire.