Tvad and Madfloyd,
I used to have the ARC Ref 3 before I sold it for the dCS Puccini which doubles as a digital pre-amp. It was driving the Bryston 28B SST monoblocks and was certainly dynamic with huge dynamic contrasts. So if it sounds bland or dull, it is quite likely the impedance mismatch with your amps, as suggested by Pubul.
I used to have the ARC Ref 3 before I sold it for the dCS Puccini which doubles as a digital pre-amp. It was driving the Bryston 28B SST monoblocks and was certainly dynamic with huge dynamic contrasts. So if it sounds bland or dull, it is quite likely the impedance mismatch with your amps, as suggested by Pubul.