If the price is right go for it. A smaller system is my home office has the original Cambridge Audio CD4. I recently picked up a used Cambridge Dacmagic (was $600), which is a 44.1 DAC with the same components as their outstanding CD6 single box player; but even better because of what they added to the separate box.
I paid $85 plus shipping, which also included a digital cable that would have been $50 new. Best cheap major upgrade I ever made. Also look for an original MBB Link DAC. It is the same as the Link III 24/96 DAC, but cannot be upgraded with the add-on circuit boards. They go for around $150 used. The Link III is $350 to $400.