I used the Advent 300 as a preamp in a second system several years ago with a Hafler DH 120. They looked great together because they are exactly the same size. They also sounded good considering the modest price. That said, the 120 is only 60 wpc and may not have enough power for large Advents. However, you may want to consider a Hafler DH 220, if you can find one.
Crown Amplifier for Advent 300
Have had one respondant to another thread suggest a Crown DC300 as a good power amp mate to go between an Advent 300 and Large Original Advent speakers. Am interested in general info on this amp, as well as the DC150 and DC75 models. I remember them vaguely as being quite handsome units and of good build quality. But I never listened to the amps critically - they were just out of my league - pricewise - back in those days. Any info at all on this equipment will be appreciated.