In researching Podium aand Mackie 350's I see the mackies are bi-amped (two amps for each speaker)with crossovers high frequency amp and low frequency amp. If I understand correctly this is a big advantage over the Podium speakers with only 1 amplifier per speaker/ Low frequency waves tend to rob mid and high frequency waves when sharing the same amplifier. the cost diffrence being Mackie's have two amplifiers per speaker and the podiums have one.