hi, Just wondering can iMac have enough power for those studio monitor speaker ? etc : Presonus Eris E4.5 or E5 Active Studio Monitors Yamaha HS50 Monitor Speakers Behringer Ms-20 What will you guys recommended for iMac supported(without any external amp) quality speaker ? (usage will be daily surfing net / music / editing video) looking for $150+/- (with bluetooth/aux better). Thank you for advice & sharing. Cheers !