Here's the specs from NAD. The T534 is a replacement for the T533 and has a couple of additions: HDMI Input and the Faroudja DCDi chip. List is $499.
Here are the specs:
. Plays DVD-Video, DVD-R, DVD+-RW, VCD 2.0, JPEG, DivX
. Plays DVD-Audio", CD, CD-R, CD-RW
. Dolby Digital decoder integrated
. Bass management for DVD-A and Dolby decoded programs
. Dolby Digital/PCM/DTS digital out
. MP-3 decoder integrated (song titles displayed on video output)
. Coaxial and Optical digital outputs
. Auto switch from PCM to Bitstream
. Audiophile quality 24 bit 192kHz DACs
. Audiophile quality 5.1 analogue output
. 4 x 10 bit Video DAC running at 54 mHz
. Progressive scan with 3:2 pull down (film detection mode)
. Component ,S-Vldeo, and Composite video outputs
. HDMI output
. Faroudja DCDi video up-conversion to 720p and 1080i
. Scene Bookmarking
. Zoom (X100), Marker, marker Search
. Smooth Scan and Slow Motion
. 12V Trigger Input
. NAD DVD 6 Remote Control