I have been using these superb speakers with my Acurus amplifier I have up on Ebay right now. The speakers are excellent sounding, I replaced one tweeter with an exact rplacent from another pair. I still have 2 midrange speakers and maybe even another tweeter though I did not test them. Took them from a pair that had been banged up. I also have the crossovers I think. If the buy wants them I will include them in the bid price, but will charge another 15.00 for postage. These sound great and I just replaced them with a pair of Mackie HR824's so I wouldn't have to use and amplifier with my computer.