To Dac or not to Dac

I think I have too much time on my hands but,,,,, I am currently using a Arcam FMJ DVD27a CD/DVD player and I'm toying around with the idea of adding a DAC to my system. One option I am looking at is to get the new Musical Fidelity KW DAC.Any thoughs about adding the KW Dac would be appreciated.
The rest of my system consists of B&W 802D L/R speakers. Bryston 7B-SST monoblocks and a Mcintosh MX135 pre/pro.