  We show that one can deterministically generate out of $N$ copies of an
unknown unitary operation up to $N^2$ almost perfect copies. The result holds
for all operations generated by a Hamiltonian with an unknown interaction
strength. This generalizes a similar result in the context of phase covariant
cloning where, however, super-replication comes at the price of an
exponentially reduced probability of success. We also show that multiple copies
of unitary operations can be emulated by operations acting on a much smaller
space, e.g., a magnetic field acting on a single $n$-level system allows one to
emulate the action of the field on $n^2$ qubits.
