  We study the anisotropic lattice QCD for precision computations of
heavy-light matrix elements. Our previous study in which the lattices are
calibrated with a few percent accuracy has already given results comparable to
the existing calculations. This suggests that even higher precision may be
achieved by a more precise calibration of anisotropic lattices. We describe our
strategy to tune the gauge and quark parameters with accuracies much less than
1 % in the quenched approximation.
