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OPERATION
OFF/ON POWER TOGGLE SWITCH
Push the AC toggle switch toward the rear, to the “ON” position. The 6SN7 input tubes, 1629 Cat
Eye tube and the 300B driver tube will light up in this setting.
STANDBY TOGGLE SWITCH
Push the toggle switch toward the rear of the unit to operate. The output tube will light up.
‘BREAK IN’ PERIOD
The tubes, capacitors and the output transformers take approximately 100 hours of music playing
to fully settle in for peak performance. Small imperfections in the tube surfaces will ‘boil off’
during the break in period as well. The amplifier will sound good right out of the box but it will
improve as break in occurs. After the first couple of hours you will notice increased depth and
tighter bass. This break in period is true with most high performance audio amplifiers.
REPLACING VACUUM TUBES
If it becomes necessary to replace the tubes, the same brand as installed new should be used. A
complete new tube kit is available from Cary Audio Design. Although useful tube life varies
depending on the nature and degree of use, under normal home use, the 845 or the 211 output
tube and the 300B driver tube should last many years in the CAD-805. The 6SN7 input tubes
should last even longer.
NOTE
Any current production or New Old Stock (NOS) types of 211, 845, 6SN7 or
300B tubes will work fine in the CAD-805 Anniversary Edition amplifier. The
voltages are fine for all available types.
WARNING
Make sure the amplifier is unplugged 30 minutes from the AC mains before
replacing the tubes to avoid risk of shock and high heat from the 211 or 845
tube.
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