I am using the digital CX3 with the Ventilator. Just disable the on-board leslie and hook it up. I've owned a number of Hammonds and leslies in years past, and the Ventilator is as close to a real 122 as anything you could imagine. With the CX3 it seems to me that some of my upper register tends to be a little over emphasized so I adjust the drawbars accordingly. I had stopped using my CX3 until I got the Ventilator, now the CX3 is back in my stage rig. It sound great with the vent. YMMV Don