YES! I have exactly the same. Coming from a SMLS SP200 amp, ARYA's improvement is sensational. Arya seem to scale so well to the quality power output of the A90.
This combination is so freaking seductive, the soundfield is 3D, hyper realistic, huge and has so much depth, it musical and punchy/fast, pleasant warm/neutral, super extended (especially sub bass impact/definition), less need for EQ, super detailed but never analytical. It reminds me of listening to my 15K hifi, it is an utterly immersive experience. The A90 is such a perfect partner for the Arya.
Did you also experience a slightly warmer/more lush presentation coming from other amps? I have no desire to EQ anymore.