I supplement my A4 and Rytm with a moog slim phatty and minitaur running from CV. So happy! Lately i will admit i build the lead and bass with the moogs but fill in the rest with a4. It really is a great set up. I still haven’t got really comfortable with the menus and quick changes on the A4 so its easier having the physical knobs of the other two machines as I get more confident.