Two new families of T-dual integrable models of dyonic type are constructed
. They represent specific A(n)((1)) singular non-abelian affine Toda models
having U(1) global symmetry. Their I-soliton spectrum contains both neutra
l and U(I)-charged topological solitons sharing the main properties of 4-di
mensional Yang-Mills-Higgs monopoles and dyons. The semiclassical quantizat
ion of these solutions as well as the exact counterterms and the coupling c
onstant renormalization are studied. (C) 2001 Elsevier Science B.V. All rig
hts reserved.