  We construct quadratic quantum algebra based on the dynamical RLL-relation
for the quantum $R$-matrix related to $SL(NM)$-bundles with nontrivial
characteristic class over elliptic curve. This $R$-matrix generalizes
simultaneously the elliptic nondynamical Baxter--Belavin and the dynamical
Felder $R$-matrices,and the obtained quadratic relations generalize both -- the
Sklyanin algebra and the relations in the Felder-Tarasov-Varchenko elliptic
quantum group, which are reproduced in the particular cases $M=1$ and $N=1$
respectively.
