Power-On Override:
When activated, the unit powers on when the
AC power is turned on without needing push the front panel
power button.
Reset to Default:
The amplifier controls are set to Balance = 0,
Display Timeout = Off, Home Theater Mode = None, and Display
Brightness = 8, and Remote Left-Right Arrow buttons set to Not
Active.
Tube Heater Voltage Jumper Settings
The microZOTL Preamplifier
comes with selected old-stock
12SN7 tubes as its standard
output tubes. By changing the
jumpers on the circuit board,
the amp can also use 6SN7
tubes. These are identical
sonically, they simply use
different voltages for the
heater. When switching from
one to the other, be sure to set
the jumpers on the boards to
the correct position. A 6-volt
tube like the 6SN7 will burn out
quickly if given 12 volts.
On the circuit board, there are
two headers next to each other,
for a total of 4 pins. There is a small diagram showing the correct
way to orient the jumpers. When using only a single jumper in 6V
operation, there is a header labeled “park” where you can store
the extra jumper.
To use 6SN7s, set the jumpers to 6V by placing a single jumper
across the center two pins. To use 12SN7s, set the jumpers to 12V
by using two jumpers, covering all 4 pins.
