Upgraded Denon A1SE's don't have an i-link socket so no, it won't work.
Upgraded A1SE's only have a 'Denon Link' socket which uses a different connector and a different method of transfer.
It is only compatible with high end Denon DVD players like the A11 and A1.
I've heared that the next flagship amp from Denon will have both i-link and Denon link, but it hasn't been released yet.