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 po
wer led will fl ash. When the unit goes out of mute into operate mode the pow-
er 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 out-
put 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 discreet design.
Class A direct coupled Mosfet output stage
Custom low noise Torodial power transformer with a Farady shield.
Discreet regulated power supply for audio circuits.
