As I recall, the Adcom CD-750 player has balanced outs. It is a great sounding CD player that can be found for about $700. Haven't seen one as low as $600, but you could try.
$600 cd player with balanced output
I just purchased a parasound halo amp and pre amp. I would like to utilize the balanced inputs, but my cd player is a musical fidelity A3. The only outputs are single ended. Does anyone know of a 600 dollar cd player with balanced outputs that can compete with the A3? Thanks.