Although to be sure one would have to compare it, same recording with a different device.
Yeah, but you could listen to our four hands recordings for example. They are made with the Zoom H4 old model as you know. Of course, it´s not the same piece to compare, but I don´t know, if I will find the time at this moment to make another recording of the same piece with the old model. I think, the microphones of the new model are not audibly better than of the old model, it´s more the many new features, which make this new model an advantage to have.
And doesn't it also have 4-track recording, for recording 4-hands with yourself ?
Yes, it has, but the old model has it, too.