Rmarcus5757, do you mean to say the InnerSound amp has a "Power Limiter" that limits the power of this 600 watt amp to around 50 watts/channel just for Quads? Hmmm, that's the first I've heard of this! Maybe the channels are fused and you can change fuses to accommodate any speakers?
Regardless of that, it may not be the best sounding amp you could use on the Quads...