4. INPUT LEVEL Switch This switches the input sensitivity (+4 dBm/-10 dBm). Select the setting appropriate for use with your system. 5. MODE Switch Switches the unit between the STEREO and BTL modes. Select the mode that is appropriate for your configuration ( � p. 8, 9). STEREO : Channel A and Channel B work independently of each other. In this mode, the amp functions as a standard power amplifier. BTL : Channel A and Channel B are bridged internally, creating a 300 watt (8 ohms) mono power amplifier. 6. Speaker Connection Terminals (Binding Posts) These are terminals for connecting speakers. * To avoid the risk of electric shock, do not touch the terminals while the amp is on. Please refer to "Precautions When Connecting and Switching on the Power". ( � p. 10) 7. Cooling Fan/Air Vent This comprises a forced-air cooling fan in combination with air vents. Cooler air is drawn in through the intakes in the top and bottom panels, and the air heated by the amp is expelled through the vents. The fan is activated whenever the temperature of the interior heat sinks exceeds 60 �C, and the rotation speed of the fan changes smoothly in response to any change in the temperature. * To ensure adequate cooling capacity, position the amp so that both intake and exhaust vents remain unblocked. (About Rack Mounting � p. 13)
