Rogue Audio 99 Owners manual

Date: 9/24/03

Rogue Ninety-Nine

Vacuum Tube Preamplifier

Owners Manual

Vacuum Tube Amplifiers

TABLE OF CONTENTS

1) Introduction 1

2) Setting up your preamplifier 1

3) Operating your preamplifier 5

4) Maintenance 7

5) If there’s a problem 7

6) Specifications 8

7) Warranty 9

Rogue Ninety- Nine Owners Manual Rogue Ninety-Nine Owners Manual 9

INTRODUCTION

Congratulations on your purchase decision! We at Rogue Audio
truly believe that our amplifiers and preamplifiers provide the
“smartest” value in high-end audio. If you have never owned a
vacuum tube preamplifier you will be thrilled by the silky-smooth
sound and incredible detail that only a tube preamp can provide. And
with your Rogue Audio product, you can be sure that you are getting
the very best in tube amplification. We at Rogue Audio are
extremely proud of our products and want you to enjoy them to their
fullest potential. So please, take the time to read through this short
manual so that you can be confident that you have set up your
amplifier properly.

SETTING UP YOUR PREAMPLIFIER

Tools required: #2 phillips head screwdriver and a clean glove

WARNING - This preamplifier produces voltages
that could cause injury or death. Never open the
preamplifier while it is plugged in, and always wait
at least one hour after turning the unit off to unplug
and open the unit. Lethal voltages can remain in the
electronics after the unit is unplugged

1) Opening the box - Carefully remove the preamplifier, power
supply and remote control from the box. It is important that you
retain the packing material and boxes in the event that the
amplifier ever needs servicing. The packing material and box
have been carefully designed to protect your valuable equipment
during shipping so you don’t want to throw them away!

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2) Seating the Tubes – It is possible for the tubes to loosen in their
sockets during shipping. Using a glove or a clean dry cloth make
sure that the tubes are fully seated in their sockets as shown in
figure 1. Note the correct location and orientation of the tubes.

Cartridge
Loading

6 SN7

12AX7

12AU7 -LG
12AT7-MG
12AX7-HG

h/l
Switches

Figure 1

LG - Low Gain – use “l” switch setting
MG - Medium Gain – use “h” switch setting
HG - High Gain – use “h” switch setting

The optional all-tube phono section consists of two input tubes
(12AX7), a passive RIAA equalization section, and an output section
that can be configured in one of three gain levels to accommodate
different cartridge output levels. Using 12AU7 tubes in the output
amplification stage (the two tubes nearest the front of the unit)
provides an overall gain of approximately 63dB. This is very
satisfactory for moving magnet and moving coil cartridges with an
output over 1mV. In this configuration the two small switches on the
phono board should be in the “l” setting. An additional 10dB of gain
can be realized by replacing the 12AU7 tubes with 12AT7 tubes. In
this case the switches should be moved to the “h” position. This
configuration is recommended for cartridge outputs of 0.4mV and

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