Yes of course you can. Just be aware if the CDP has variable output to turn it down. Or it might be really loud. But even if you don’t have that you can still test, just use a track that starts at a low volume, just in case.
Generally speaking the output from line level sources like a CDP is more than adequate to drive most amps to full power. Most preamps in other words don’t amplify they attenuate. This is why people are able to run these things direct, they have plenty of output. So be aware and if you hook it up direct and still can’t get good volume its definitely not the CDP.
In this case, from the sounds of it, its the amp.
Generally speaking the output from line level sources like a CDP is more than adequate to drive most amps to full power. Most preamps in other words don’t amplify they attenuate. This is why people are able to run these things direct, they have plenty of output. So be aware and if you hook it up direct and still can’t get good volume its definitely not the CDP.
In this case, from the sounds of it, its the amp.