[. . . ] These phono inputs were different from all other inputs because of the unique output signal from any phono cartridge. When a record is cut the bass is decreased and the treble increased so that the full stereo signal can be stored within the grooves of a record. [. . . ] The phono stage reverses this process by equalizing the signal to restore flat full frequency response. Equally important is the need to amplify the very small signal that comes from a phono cartridge, which is many times smaller than the output from a CD player, tuner or tape deck. A phono stage raises the output, or gain, so that it is equivalent to the output levels of standard output components. In addition, there are two types of phono cartridges: Moving Magnet (MM), typically high output; or Moving Coil (MC), typically low output, which may need as much as ten times the gain of a MM cartridge, unless described as a high output moving coil. The Pro-Ject Phono Box is a complete phono stage, providing the necessary gain and equalization, that allows for the hook up of any MM or MC cartridge to any available standard level input. The gain of The Phono Box can be adjusted for either MM or MC cartridges. Connect the power supply to The Phono Box, and then plug the power supply to a wall outlet. Troubleshooting If no output is heard, check to make sure that all connections, both signal and power, are properly made, and confirm that the selector switch on the system control unit is set to the correct input. Hum may be heard if the ground connector is not connected, or if the unit is placed on or near the power supply of other components. Be certain to connect the ground, and/or move The Phono Box to an alternate position among the equipment to eliminate any hum. Some users of cartridges at or slightly below 2. 5 mV using the MM gain setting may find that overall volume is too low, that the volume knob must be positioned considerably higher than normal (where CD volume normally would be, for example), or that the sound is a bit thin. However, this may provide more output than may be desired, so if any distortion is heard, or if the range of volume available at the volume control becomes severely limited, returning to the MM setting is advised. WARRANTY This entitles you to have the music hall mpp repaired free of charge, at our discretion, for one year after the date of purchase, at any authorized music hall Service Center, provided the unit was purchased from an authorized dealer. music hall takes no responsibility for defects arising from accident, misuse, abuse, wear and tear, neglect or unauthorized repair and/or adjustment. music hall cannot accept responsibility for damage or loss that occurs during transit. [. . . ] music hall cannot accept responsibility for damage or loss that occurs during transit. CLAIMS UNDER WARRANTY The mpp should be packed in the original packing and returned to the dealer from whom it was purchased, or, upon authorization, to a music hall Service Center. [. . . ]