Hi!
Little bit late, but maybe in the right time..
The number of inputs on the Tascam DR-40=2 + 2x built in mics.
The number of inputs on Zoom H4N=4 (2x XLR, 1x 3,5" TRS on the backside) The 3,5" TRS disconnets the built-in mics.
Maybe this view can make more handsome the ugly fellow
Best regards,
Simon