MoFi StudioPhono, UltraPhono Cartridge Loading Sheet

CARTRIDGE LOADING

UltraPhono™ and StudioPhono™ are factory set to
operate with most high-output moving magnet
(MM), moving coil (MC), and moving iron (MI)
phono cartridges. If you are using a low-output
moving coil (MC) cartridge, you will need to adjust
the phono preamplifier’s settings for best results.

Locate the DIP switches, which are found on the
underside. Each switch is arranged in a mirror
pattern for left and right channels.

Start by selecting each DIP switch for the
recommended impedance of your cartridge as
shown in the Input Impedance Settings chart. Next,
select the best gain setting for your cartridge
using the Gain Settings chart and set DIP switches
accordingly.

For moving magnet (MM), start with 40dB. For
moving coil (MC), start with 60dB. An additional
6dB can be added via DIP switches 1 and 12.

INPUT IMPEDANCE SETTINGS

Impedance
(Ohms)

75 Ohms On On On On

85 Ohms On On Off Off

100 Ohms On Off Off Off

330 Ohms Off On On Off

500 Ohms Off On Off Off

900 Ohms Off Off On On

1000 Ohms Off Off On Off

8500 Ohms Off Off Off On

47000 Ohms Off Off Off Off

DIP Switch No.

3 / 10 4/9 5/8 6/7

GAIN SETTINGS

Gain (dB)

40dB MM > 3mV Off Off

46dB MM 1 – 3mV On Off

60dB MC 0.4mV Off On

66dB MC 0.1mV On On

DIP Switch No.

1 / 12 2/11