DVD player used as a CD player good/bad

Hi, I have recently started wondering if one of my weak links to poor cd sound and punch is the fact that I am using my Toshiba DVD player for CD 2ch listening. I use my optical connections between the player and A/V receiver. I really want better sound. I have upgreaded to a Denon receiver that will be here shortly and I run klipsch towers and surrounds and a velodyne 15in sub. I really lack good hit in the 100hz area. It really sounds like the mids are muted or uncapable of playing loud. Do I need a dedicated SACD or CD player to enjoy good 2ch audio. Any educ. on the subject would be great.
Thanks