We have obtained for the first time K-band-infrared spectra of the soft X-r
ay transient V616 Mon (=A0620-00). We determine the 2-sigma upper limit to
the fraction of light arising from the accretion disc to be 27 percent. The
effect this has on the binary inclination, determined from modelling the i
nfrared ellipsoidal variations is to increase it by less than 7 degrees and
decrease the mass of the the black hole by less than 3.6 M-..