Tube Works 9002 Owner's Manual

The 9002 Real Tube 2 Rack is a two-channel tube preamp designed for guitar use. The wide
input range of channel 2 (Clean channel) allows it to remain clean even with high transient inputs.
The stereo effects loop, and adjustable send and receive levels aid greatly in achieving proper
signal level and signal to noise ratio regardless of the effect used. The 9002 can be used with
either basic power amplifiers or combo guitar amplifiers. We strongly recommend that you
audition the 9002 with our MosValve power amplifier, as this combination will insure
optimum tone and performance.
1. CHANNEL SWITCH: Switches between channel 1 and 2. This switch is overridden
when a footswitch is connected to the "Ft. Sw" jack on the rear panel.
2. STACK SWITCH: Switches the 9002 in and out of the "Stack" mode. BOTH the Green
and Red LED's will light in this mode. The Stack mode (Stack switch up) is when Channel
1 is driven into Channel 2. With the stack mode selected, The "Channel" switch
alternately selects Channel 2 (clean) and Stacked – Channel 1 into Channel 2. NOTE:
All controls function in the Stack mode EXCEPT "Volume". "Stack Master" is active only
when the Green and Red LED's are both lit.
This switch is also overridden when a footswitch is connected to the "Ft. Sw" jack on the
rear panel.
3. INPUT JACK: Standard guitar input. This input will accept a wide range of levels for both
Active or Passive guitar pickups, as well as Bass or Keyboards.
4. DRIVE CONTROL: Sets the amount of signal gain at the first stage of the tube for
channel 1. Increasing the setting of this control results in more overdrive and sustain.
This, as well as the contour control will have a great effect on the quality of the actual
overdrive texture obtained, since both "Drive" and "Contour" are PRE-TUBE controls.
5. CONTOUR CONTROL: Adjusts the amount of low frequencies, or "bottom end" driven
into the tube. Some players prefer a fatter, American style texture to their overdrive,
while others prefer the brighter, British style edge. Moving the control toward "10" gives a
fatter sound, while toward "0" will give a thinner, more biting tone. It is usually advisable
to use less contour for playing chords in overdrive, while single string leads may sound
better with more contour.
6. MASTER CONTROL: Sets the overall output level of Channel 1. In the "Stack" mode,
This control becomes a "Drive" control for the second tube Channel as well.
7. HI CONTROL: Adjusts the high frequencies,1500 Hz and above.
8. MID CONTROL: Adjusts midrange frequencies, centered between 500-800 Hz.
9. LOW CONTROL: Shelves off lower frequencies below 100 Hz.
Real Tube 2
Rackmount Preamp
Owner's Manual

FRONT PANEL CONTROLS

(Left to Right)

CHANNEL 1 CONTROLS

1