Teac Pd250


I´m new in the audio business and I´m looking information about a TEAC CD player PD250. It was released in 1985 aprox. It has a 18 bit / 8 oversampling .

My question is about the DAC it has. Is there any difference between that cd player and a regular cd rom player, or a regular dvd player?

I know we have new technologies today, but I would like to know where is the difference with these machines and regular players.

Thank you.

I Hope I don´t bother anyone with this message.

: )