Example:
$1200 Pre/Power Amp: Used Parasound HCA-1200 and a used Conrad Johnson PV-10.
$400-$600 CD: Used Cambridge, Rega, Music Hall, Rotel, Arcam, etc.
All in one player would be an Oppo if you are looking for DVD, CD, SACD, etc. I am not a fan of the sound of the Oppo but you may...