op, there are many many wonderful combinations
it is all about the amplifier/speaker load match to the room and desired volume levels, then you work back and synergize the preamp/linestage to sound beautiful with the amplifier
i have had your arc linestage as well as still having a pair of aegirs, but that particular model of arc was already gone, several years ago... i am nonetheless pretty confident the combo is terrific sounding, as is your wise choice of speaker/sub combo
enjoy!