Transport for Bel Canto DAC2

First, my system:
Green Mountain Audio Continuum 1.5 Speaker
Rogue Audio Tempest Magnum Tube amp
w/JP Cables Maximum AC Gold Power cord
Bel Canto Design DAC2 DA converter
Bolder digital cable Interconnect
Silver Audio Hyacinth Interconnect
Zu Wax Speaker cable

I listen to a variety of music including jazz, rock, pop, electronic, etc. I currently use a Toshiba DVD player as the transport, but I hear too many digital artifacts, and I wonder if it is the culprit. Any suggestions? I'm hoping to spend under $400.