Marantz CINEMA 50 9.4-Channel Network A/V Receiver (Black) - Manual (Page 66)

Connecting a turntable
This unit is compatible with turntables equipped with a moving magnet (MM) phono cartridge. When you connect to a turntable with a low output moving
coil (MC) cartridge, use a commercially available MC head amp or a step-up transformer.
If you set this unit’s input source to “Phono” and you accidentally increase the volume without having a turntable connected, you may hear a hum noise
from the speakers.
NOTE
0
The earth terminal (SIGNAL GND) of this unit is not for safety grounding
purposes. If this terminal is connected when there is a lot of noise, the
noise can be reduced. Note that depending on the turntable, connecting
the ground line may have the reverse effect of increasing noise. In this
case, it is not necessary to connect the ground line.
GND
AUDIO
OUT
L R
(MM cartridge)
Turntable
Contents Connections Playback Settings Tips Appendix
66
Front panel Display Rear panel Remote Index