I have both the 983H and the CAL Delta transport and they both sound the same to my CAL Alpha DAC. But the 983H has a better interface than the Delta, is well-built, and plays DVD's better than any other player that I've ever experienced (and is about equal to Oppo's Blu-Ray player for that purpose). The 983H is an excellent DVD player that plays just about anything that's round and shiny, and I continue to use mine even though I have Oppo's Blu-Ray player as well.
Michael
Michael