Only the ModechoVerb is a combined algo. You can do it with other algo with some creativity but they are not really combined algos and have their limitations. I agree with you that that is the one insufficiency of the H9 and the one thing that I miss; only one algo at a time is possible. Wish there were more algo like the ModechoVeb. Also wish their was a delay in upcoming Crushstation. Now you always need another pedal for your delay.