In my personal experience, Arya's become 'sweeter' over time. I experienced harshness, especially with my otherwise lovely SMSL SP200 amp. After weeks of ownership, I suddenly realized treble seemed less harsh. I honestly can't say if this is mental burn in or physical, but my observation was without doubt. Then, after i got the Topping A90, the highs became sweet and more detailed: not lower in volume, but less distortion, which was fatiguing sometimes. The A90 completely eliminated my need to EQ the moderate 5K Hz peak Arya is known for.
Long story short: burn in is most likely not finished for you, Hifiman recommends 150 hours. Do it at reasonably loud volumes, alternate dynamic music with pink noise overnight. Also, some amps (like my SP200) clearly sounded more tiring/harsh.
Long story short: burn in is most likely not finished for you, Hifiman recommends 150 hours. Do it at reasonably loud volumes, alternate dynamic music with pink noise overnight. Also, some amps (like my SP200) clearly sounded more tiring/harsh.