I wish it was full track, 2 track or even mono quarter track! This is one mono track out of 4 completely unrelated tracks on 1/4" tape. >>Might try using a o-scope with a 2 track head, just for grins. The display makes things obvious. That said, 2 track playback of full width mono isn't optimum... But might give you a very quick way to verify that there is no top end to get...