Actually in my amp right now I have a set of Electro Harmonix speakers that I put in because the original CTS speakers were damaged during shipment(I bought the amp on E-Bay). They sound ok and they seem to handle the power of the amp without trouble. I don't think they are probably quite as loud as something with a larger magnet that's more efficent would be but with an amp this powerful that doesn't seem to be a problem. I've used the VT-22 for some recording projects and it sounds great, I'm getting ready to give it a good going over before we start our next CD effort.