OPERATING MANUAL FOR THE SONIC FRONTIERS
LINE SERIES PREAMPLIFIERS
We at Sonic Frontiers hope you will derive many years of listening pleasure with your new
LINE Series Preamplifier. This Operating Manual contains important information regarding
the operation and care of these Preamplifiers. Be sure to read this manual carefully and fol-
low these instructions in order to keep them performing and sounding their best. Please con-
tact Sonic Frontiers if you have any questions - a Customer Service Representative will be
pleased to assist you.
C O N T E N T S
Unpacking ........................................................................................................1
Operation, Connection and Control Diagrams ........................................................2
Preamplifier Set-up ..............................................................................................6
Tube Insertion ....................................................................................................6
Chassis Placement ..............................................................................................7
Power Connections ............................................................................................8
Tube Replacement ............................................................................................11
Trouble Shooting ..............................................................................................11
Fuse Location ..................................................................................................11
Safety Instructions..............................................................................................12
Warranty ........................................................................................................12
This symbol is intended to alert the user to the presence of uninsulated "danger-
ous voltages" within the product's enclosure that may be of sufficient magnitude
to constitute a risk of electric shock to persons.
This symbol is intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the literature accompany-
ing the appliance.