It really depends on what Oppo you have? But I will say that transports and DAC combos are important to get right. Every transport will sound differently with whatever DAC you run it to, then there is the connection (XLR,RCA,Optical,USB Audio) to consider and cable. So, a stand alone CD player is a easier way to get the sound your after. AYRE might make a model in that range. I would love to hear others offer suggestions as well.
Matt
Matt