Reference Linestage Preamplifier Owner's Manual

• Gain – The gain knob changes the overall range in which the volume control

operates. This permits the user to fine tune the volume control so that full use

of the stepped attenuator is achieved. The center position is considered

nominal for single ended operation.

• Balance - full left and right channel attenuation. The balance control is

completely out of the audio circuit unless the balance button is pushed in.

• Source – selects source material (Phono, CD, Tuner, AUX1, and Balanced

inputs)

Pushbutton Switches

• Power – on/off operation, on the Power Supply. When activated the blue LED

under the switch will light.

• Tape Monitor - activates the tape loop. When activated the blue LED under

the switch will light. The tape monitor features a buffered tape output

eliminating potential sonic degradation of the signal while taping. When

pushed in, the input to the preamplifier is sourced from the taped material.

• Processor - activates the processor loop. When activated the blue LED under

the switch will light.

• Bypass – As explained in the Installation Section, the bypass switch routes the

unity gain input directly to the amplifier ouputs effectively bypassing the

preamplifier. When activated the blue LED under the switch will light.

• Phase Invert – switches the phase of the output of the preamplifier. When

activated the blue LED under the switch will light. Note that correcting the

phase of some recordings may provide better fidelity.

• Balance – activates the balance control. If this switch is not depressed the

balance potentiometer is not in the system and will not work. When activated

a blue LED under the switch will be on and the balance control will be active

• Mono – combines left and right channels. When activated the blue LED under

the switch will be lit.

12Volt Triggers:

The Hera has two 12V trigger (outputs) located on the rear of the power supply

chassis. If you have other equipment with triggered inputs you can use the Hera

to turn them on and off. The 12V triggers are turned on when the Hera is powered

up and turned off when the Hera is powered down.

Remote Controls

• Remote Volume Control – The Hera is equipped with a stepped attenuator

remote volume control feature. The volume may be adjusted manually using

the knob on the front panel, or by using the remote control provided.

• Remote Mute - The Hera is equipped with a remote mute control. When the

preamp is muted, a red LED will light in the lower right corner under the

volme knob.