3.2 Advanced settings
3.2.1 Tube bias
NOTE:
We recommend to perform the automatic bias every 1-2 months.
This is how to proceed: First set mode selector to OFF/IR. To start the auto bias press and
hold the buttons
Setup
and
X
(Off/Tube adjust) simultaneously for five seconds until the
four LEDs around the input selector start flashing.
Now the amplifier sets the tube bias automatically. This procedure will last about 15
minutes. – if one of the tubes fails, the LED indicating the position of the tube is the only
LED not lit!
The order of the LED/tubes are from left to right:
Input 1: Tube on the far left
Input 2: Tube second from left
Input 3: Tube second from right
Input 4: Tube on the far right
Do not turn off the device during the bias progress and wait until the amplifier switches into
standby!