15
REF 160M Manual.indd 15
4/4/18 8:54 AM
Operation
Start-Up
• Secure interconnects between the amplifier and your preamplifiero the appropriate output
terminals.
• Attach supplied power cord to rear IEC inlet of amplifier, and plug other end into grounded
A.C. power receptacle.
• Turn on preamp and all other components; mute preamp output.
• Press Reference 160S front panel power switch. Green power LED will flash on/off for
approximately 2 minutes during the auto mute cycle to allow the amplifier to stabilize voltage
before becoming active. The LED will stay on brightly, once the amplifier has stabilized.
• Note: the Reference 160S should be turned on after the other components of your system. If
the Reference 160S is turned on before other components, the amplifier will amplify any
extraneous turn-on noises those components might generate, which could potentially damage
loudspeakers. Good practice dictates that the amplifier should be turned on last and turned off
first in an audio system.
• Unmute preamplifier output, initiate source component signal, and adjust gain as appropriate.
Shut-Down
• Mute preamplifier output.
• Turn off Reference 160S via front panel power switch (or 12V trigger or RS-232).
• To prevent stress to the power supply and vacuum tubes, the control circuitry is programmed
with a “hot restart” lockout to prevent turning the unit on within 2 minutes of shutting the unit
off. If the Reference 160S power switch is pressed during this lockout period, the power LED will
illuminate red to indicate lockout operation. After 2 minutes, normal turn on can be initiated.
