Here is the short answer. Most home theater receivers already have a preamp fitted, so a dedicated preamp isn't necessary. This is particularly true if you're just watching content. However, if you're a dedicated audiophile and want to get the best out of your setup, then a preamp would be a good investment.
Do Denon receivers have phono preamp?
Note: All current Denon turntables have an EQ switch to enable or disable the turntable's built-in phono preamp. Connect the Turntable cables to any available analog (Red and White) Audio input on your receiver.
Can you plug a turntable directly into a receiver?
You can connect your turntable to any line-level input on your receiver so long as the turntable is already power by a phono preamp that's either built-in or external. These line-level inputs are usually labeled as AUX, LINE, CD, DVD, TV and RECORDER, but could differ based on the brand of receiver.20 sept 2021