I dropped by one of the local dealer last night (where I will audition the Cambridge Audio players tomorrow), I noticed a CD DAC / Transport combo from 47 Laboratory (don't remember what model).... the transport has no trays, no slots. The entire unit is nothing but a silver metallic box, slighly bigger than a thick paperback novel. The transport is exposed on top of the machine. To load the disc, you simply place it on the transport, weight it down with a cap, and it starts playing.... wonderful sounding setup too, might I add.