Tube Works 924 User Manual

-1-
Blue Tube
™
II Rack
We thank you for your purchase of the most versatile and best designed tube preamp rack on
the market. We are confident this product will meet your desires to acquire the Real "TUBE"
sound.
TAKE TIME TO KNOW THE "RACK"
The rack is a very versatile unit. Please take the necessary time to look over this manual and
become familiar with the basic layout of controls as well as the unique features. Take time and
let your ears guide you through the tonal possibilities. The EQ sections have been carefully op-
timized for current and classic playing styles and have an extremely wide range of control. It is
possible that you may be just a "tweak" away from your desired sound, so be patient and jot
down the settings that you prefer most. Also become fully aware of the several mode combina-
tions possible with the two channels plus the channel stacking feature.
APPLICATIONS OVERVIEW
The Blue Tube II Rack is a two-channel tube pre-amp designed for both bass and guitar appli-
cations. The wide input range of channel 2 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. This unit can be
used with either basic power amplifiers or combo (instrument level) amplifiers. We strongly rec-
ommend that you audition this preamp with our MosValve power amplifier, as this combination
will Insure optimum tone and performance.
OWNER’S MANUAL

Tube Works 924 Specifications

General

Type	Hybrid
Channels	1
Reverb	Yes
Effects Loop	Yes
Speaker Output	8 Ohms
Tubes	2 x 12AX7

Summary

Introduction and Overview

Getting to Know the Rack

Advice to familiarize with the unit's layout, controls, and unique features for optimal tonal possibilities.

Applications Overview

Describes the Blue Tube II Rack as a two-channel pre-amp for bass and guitar, highlighting its wide input range and effects loop.

Front Panel Controls

Channel and Stack Switching

Controls for switching between channels and enabling the 'Stack' mode, overridden by footswitch.

Input Jack

Standard guitar input jack, suitable for active pickups, bass, and keyboards.

Channel 1 Controls

Controls for Channel 1: Drive, Contour, Master, Hi, Mid, and Low frequency adjustments.

Channel 2 Controls

Controls for Channel 2: Volume, Stack Master, Hi, and Low frequency adjustments.

Rear Panel Layout and Power

Power Switch

Supplies main AC power to the unit; LEDs indicate power status.

Rear Panel Connections

Details on Line Out, Instrument Out, Effects Send/Receive, Dry Outs, and Footswitch jacks.

Warranty Information

Product Warranty Terms

Details warranty periods for electronic components and cabinet, and registration requirements.

Service and Returns

Procedure for service, requiring an RMA number and using original packaging.