can the card power speakers on its own ?; or will i need powered speakers ? i have a great pair of polk audio bookshelf speakers but i'm not sure if the card alone will be sufficient. i learned a lot about the interface from your threads and its great with my sennnheiser h-phones. my next effort is a pair of hi end speakers. will i need an amp in my plan ?
thanks for sharing any suggestions.
speakers i'm considering = http://www.crutchfield.com/p_107RTIA1C/Polk-Audio-RTi-A1-Cherry.html?tp=186&awkw=25288860145&awat=pla&awnw=g&awcr=6488481025&awdv=c