Can i hook up a CD player (line out) to Sprout100's Phono input?

Just wondering since I don’t have a turntable and I’m using the analog input already…
Is this safe? What about the sound quality? Excuse me for my ignorance.

No. As I see it described the Sprout phono input leads to a phono preamplifier which will have an eq stage to compensate for the eq coming in from the turntable cartridge and will not sound linear or right with a cd output signal.

That’s it. Thank you so much, sir.