Boulder 508 - Moving Coil or Moving Magnet Selection; Connection to AC Mains

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Getting Started
Getting Started
Moving Coil or Moving Magnet Selection
Set the Rear Panel Cartridge Selection Switch to either MC (Moving
Coil) or MM (Moving Magnet) depending on the type of cartridge mounted
to your turntable.
In the MC position, the resistive cartridge loading is 100Ω. When the Rear
Panel Cartridge Selection Switch is set to the MC position, an additional
low-noise 26 dB gain stage is inserted at the input for a total of 70 dB of
gain.
In the MM position, the resistive cartridge loading is 47kΩ. This is the
recommended impedance for MM. Total gain in the MM position is 44 dB.
Connection to AC Mains
Your 508 Phono Preamplier is supplied with an AC mains power cord
appropriate for the location where it was purchased.
Connect the AC power cord to the AC Power Input connection on the rear
panel of the 508 as shown and plug the other end into the AC mains outlet.
Cartridge Selection Switch
AC Mains