4
Basic Operation:
The unit is designed to stay on at all times. The power switch is located in the rear.
When the power is turned on the unit goes into a mute state for twenty seconds, this is
to allow the circuitry to stabilize. During this period no functions are available. During
the mute period the power led will fl ash. When the unit goes out of mute into operate
mode the power led will stop fl ashing and stay on.
The unit has two inputs that can be selected from the front panel. The unit also has
a preamp function, which is selected from the button on the front panel. When the
preamp function is engaged the headphone output is disconnected, only one output
either headphone or preamp is available at any one time.
The unit gets to optimum performance after about one hour after turn on. In the event
of a power loss the unit shuts off and upon restoration of power the unit will go through
the mute cycle and return to the state it was in prior to the loss of power. It will
remember the last input and function and will return to that setting before the loss of
power. This is also true when the unit is switched off with the power switch.
It is recommended that the unit stay on at all times, if you are away for an extended
period of time you could shut the unit off.
Features:
Works with headphones with impedances of 15 ohms to 600 ohms
Designed as a power amplifi er rather than a typical headphone amplifi er to be able
to drive low impedance planar headphones.
Low feedback wide bandwidth discrete design.
Class A direct coupled Mosfet output stage
Custom low noise Toroidal power transformer with a Faraday shield.
Discrete regulated power supply for audio circuits.
Locking Headphone jack.
