Specifications

A SELECTOR SWITCH
This knob is rotated to select a Line Level Input (N) or
the Phono Input (P). The Selector Switch is bypassed
when the Tape/EPL(External Processor Loop) mode is
selected by depressing the Tape/EPL-Source button (D).
B BALANCE CONTROL
This knob controls the relative balance of the left and
right channels to compensate for any discrepancies
caused by speaker placement, source imbalance, etc.
Full rotation to the left or right of the center detent will
have a ±6dB trim on levels between left and right
channels.
C VOLUME CONTROL
This knob allows variable control over the Pre 1 output
level. Turn it clockwise and the music gets louder!
D TAPE/EPL(EXTERNAL PROCESSOR LOOP)-
SOURCE BUTTON
When this button is in the SOURCE position (button is
not depressed) the signal is routed through the
Selector Switch (A) to the Tape/EPL Output (M) con-
nected with a tape deck or external processor such as
a surround sound decoder. Listening and taping is
done in this mode. When the button is depressed the
source signal is taken from a tape or processor source
through the Tape/EPL Inputs (O) bypassing the selec-
tor switch.
E PREAMPLIFIER LED
This Light Emitting Diode has three status conditions
identified by different displays. They are:
• DIM (Sleep)- indicates the Power Supply is plugged
in and connected to the Pre 1; the On-Off (G) is in
the OFF position (not depressed) and tube filaments
are turned on. When the Pre 1 is put in the ON
mode, the light will remain DIM for 45 seconds dur-
ing a start-up/mute cycle.
• ON (Normal Intensity)- indicates the On-Off button
(G) is depressed in the ON position and the Pre 1 will
allow normal funtion.
• FLASH (Normal Intensity)- indicates the Pre 1 is
muted; the Mute-Operate button (F) is depressed in
the Mute position.
F M U T E - O P E R ATE BUTTON
When in the OPERATE position (not depressed), this
button will allow normal function. When in the MUTE
position (button depressed), the music signal is cut off
from reaching the Outputs (L). The LED (E) will flash as
a reminder.
G ON-OFF BUTTON
When in the ON position (button depressed), high volt-
age power is received by the Pre 1 circuitry from the
Power Supply. A delay of approximately 45 seconds is
required for turn-on due to the soft-start nature of the
rectifying tube in the Power Supply. When in the OFF
position (not depressed), the Pre 1 is in standby mode;
power is received by the tube filaments only.
H POWER SUPPLY LED
This LED will light at normal intensity to indicate the
power supply is plugged in and the tube filaments are
receiving low voltage power. For regular use, it is safe
to leave the Power Supply plugged in and receiving
power. If the unit is to sit idle for one week or more,
the operator may wish to unplug the AC power cord.
C O N T R O L F U N C T I O N S