Specifications

O OPTIONAL PHONO INPUT
AND GROUND CONNECTION
This input is designed to replace the AUX 2 line level
input when the optional phono input module is
installed. This extra amplification stage provides addi-
tional gain when dealing with sensitive signals from
moving magnet phono cartridges. Connections are
made from a turntable; left channel to left channel and
right channel to right channel. The turntable’s ground
wire should connect to the ground post at the center
of the RCA inputs to prevent any “hum” from interfer-
ing with the signal. See the separate instruction sheet
that comes with this optional stage for more informa-
tion. If your Integrated 1 was not purchased with a
phono stage and you wish to order one, contact your
dealer or Sonic Frontiers directly.
DO NOT CONNECT A LINE LEVEL SOURCE TO THE
PHONO INPUT IF THE OPTIONAL PHONO INPUT IS
INSTALLED. DOING SO MAY OVERLOAD AND
DESTROY THE SENSITIVE CIRCUITRY. THIS DAMAGE
WOULD NOT BE COVERED UNDER YOUR WARRANTY.
WARNING-DISCONNECT THE A C D E TA C H -
A B L E P O W E RC O R D F R O M T H EI N T E G -
R ATED 1 AND WAIT 5 MINUTES BEFORE
REMOVING COVER, TUBES OR FUSE.
FIG URE 1
This is an internal view of the jumper wires connecting the
RCA Preamplifier Outputs to the Power Amplifier Inputs.
The jumper wires must be cut or desoldered to function as
separate units. To reconfigure as an Integrated Amplifier,
the Preamplifier Out connectors may be connected to the
Power Amplifier Inputs externally via a pair of short inter-
connects or internally by resoldering the jumpers.
PRE OUTPUTS
POWER INPUTS
Jumper wires
which need to
be cut or de-sol-
dered for use as
separates.
FIGURE 2
Top figure shows a connection to a loudspeaker with an
8 ohm impedance, lower figure show a connection to a
speaker with 4 ohm impedance.
S E T T I N G U P
The Integrated 1 comes with thirteen (13) tubes, as follows:
12AU7 (LV1 & V1) PREAMP TUBES
These tubes perform the line level preamplifying function of
the Integrated 1. The preamplifier stage of the Integrated 1
provides 12 db of gain. The 12AU7 tubes may be replaced
with matched pairs of ECC82, E82CC, ECC802S, 5814A,
6189, CV4003 or M8136.