  The interesting state X(1600) with $J^{PC}I^G=2^{++}2^+$ can't be a
conventional $q \bar q$ meson in the quark model. Using a mixed interpolating
current with different color configurations, we investigate the possible
existence of X(1600) in the framework of QCD finite energy sum rules. Our
results indicate that both the "hidden color" and coupled channel effects may
be quite important in the multiquark system. We propose several reactions to
look for this state.
