I'm using sequencers 1 and 2 for midi devices, Volcas to be precise, and I also want to hear some drums. If I midi out to a third device, they don't all play. So I guess I need a drum machine or module with gate inputs. What are the reasonable options? Can I just send the gates out to triggers? I just want a decently priced option, kind of don't even care about sound quality. I just want to hear drums and two synths all at the same time.