Emotiva Stealth SP-1 User Manual page 20

Stealth SP-1 Input Selector and Phono Preamp
If the sound is overloaded or distorted....
If you're using a moving magnet (MM) cartridge, make sure both switches are
set to MM.
Some MC cartridges also have a high output and require that the switches
be set to MM.
If the sound level is very low....
If you're using a moving coil (MC) cartridge, make sure both switches are set to MC.
If the channels aren't balanced or sound different from each other....
The MM / MC switches and the cartridge impedance switches (for MC) on the
SP-1 are separate for each channel. Make sure the switches for both channels are set
the same.
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