The Overall sound quality of the Ananda driven by the 901s and R2r2000 is about 90% of a well driven HE560.
The Bigger diaphragm and the more open design of the Ananda makes it more open sounding and faster than the he560 in the treble. But in the mids and lows, the HE560 is still more neutral and natural sounding in comparison to the Ananda driven by the 901s and r2r2000.