Yup, i'm running a pair of Q175.2's, and I have practically every other ESX made except for the Q120.4. Yes Cutra, I know you have one for sale. So flexible, balls for days. These things are the cat's ass IMO. They look simple, and run hard. They can pretty much do anything you ask of them to. The 4 channels can even be run down to TRUE MONO. Yes, use it as a 4, 3, 2, 1 channel amp. I don't know of anything else that does this. Why am I telling you guys, i'm sure you already know!