Any CDP with digitial INPUT to be used as DAC?

Hello. I am curious as to if there exists a CD players that offer a digital input such that it could be used as an external DAC for another CDP at times, say hooked to a big CD jukebox for use in casual listening? I would be looking for anything under a grand on the used market, the further under the better, if possible, and sonically equal to or, ideally, superior to a MSB Nelson Link Dac w/upsampling. Would it be possible to modify an existing CDP to run with a digital input to that end? Thanks for any insight!