So the Sennheiser HDV 820 trick, just with reversed effect... Anyway, hard to believe – from an electrical point of view – that 1.7 Ω do enough on a 12.8 Ω load. Certainly not 6½ dB. Also, I wouldn't sacrifice the better DAC/amp in favor of such a crude equalizing method. Again, what do you think of the Atlas, compared to the Vega? BTW, I don't hear any hiss from the Mojo, neither with SE846 nor with Andromeda (which have about the same sensitivity). This with 68 year old ears.