The turntable requires a phono preamplifier to boost the output of the phono cartridge (and to equalize the signal in conformance with RIAA standard). You can use the phono preamp built into the Kenwood receiver, or use a separate, external phono preamp and plug it into the AUX input (or other available input EXCEPT phono) of the receiver.
In any case, you need something to further amplify the signal enough to drive your speakers. This is the function of the power amplifier section of the receiver.
In your situation, the receiver provides three important functions:
- Phono preamp - functions described above
- Source selection and volume control - the ability to connect and switch between multiple input devices (turntable, CD player, phone, etc), and the ability to control the volume of speakers or headphones connected to the receiver
- Power amp - amplifies input signals from turntable, CD player, etc to the level required to drive speakers.
If for whatever reason you don't want to use the receiver to provide these functions, you would need a) a separate phono preamplifier, b) a separate preamp for volume control (and tone control, filters, etc, if desired), and as a means of connecting and switching between multiple inputs, and c) a separate power amplifier.
While you can connect a phono preamplifier directly to a power amplifier, you would not have the ability to connect and switch between multiple inputs. Also, the power amp would need to have its own volume (gain) controls...otherwise, you would have no way to control the loudness of your speakers.
EDIT: This thread should be moved to the General Audio or Turntables forum. You can click on the report button at the bottom of your post and ask a moderator to move it.
