1. Check whether your CDP allows digits input first , eg coaxial , AES or optical. If yes, you don't need to buy a DAC, just buy a music server or streamer ( no DAC built in ) with those input, then music server or streamer to CDP ( use your CDP to decode ) -> RCA to AMP
2. If your CDP does not allow digits input, you have two other options
- Buy a music server or streamer with built-in dac and then use RCA or balance output to AMP
- Buy an independent DAC and a music server or streamer, then music server or streamer --> DAC --> AMP