  A novel exact solution of the multichannel spin-$S$ Kondo model is presented,
based on a lattice path integral approach of the single channel spin-1/2 case.
The spin exchange between the localized moment and the host is of $XXZ$-type,
including the isotropic $XXX$ limit. The free energy is given by a finite set
of non-linear integral equations, which allow for an accurate determination of
high- and low-temperature scales.
