WARRANTY AND OWNER REGISTRATION
Your BLUE TUBE is warranted for a period of THREE
FULL YEARS against defects to the original, registered
owner provided he/she has returned a completely filledout OWNER'S REGISTRATION CARD.
This warranty covers parts and labor only; shipping
charges remain the sole responsibility of the owner.
Damage due to modification or abuse is excluded from
this warranty. Before returning any unit for service, a RETURNED MERCHANDISE AUTHORIZATION NUMBER
(R.M.A.#) must be obtained.
Manufacturer is not responsible for consequential or inconsequential damages resulting from any application or
use of this product. Manufacturer and sales agents assume no liability or responsibility for safety or injury relating to the use of BLUE TUBE, and user agrees to hold
manufacturer and designer harmless in this regard. This
is the full extent of the warranty; no other warranties implied or intended.
For service and return authorization contact:
7811 E. Pierce Street
Scottsdale, AZ 85257
Ph: 480-941-0705 Fax: 480-946-2412
BLUE TUBE
Congratulations on your purchase of the best BLUE
TUBE tube preamp pedal. For the applications intended, it will give you a quality of sound unattainable
until now.
Your BLUE TUBE is intended primarily for bass, keyboard and guitar players who desire to “warm-up” and
enhance their sound by using the classic vacuum tube
as the vehicle.
The heart of the BLUE TUBE is the classic 12AX7A
twin triode vacuum tube. It is possible to obtain many
classic “old amp” sounds with your present solid-state
and probably over-processed equipment. If you are
using tube equipment, the BLUE TUBE will add even
more to the good sound you already have!
OPERATION
BLUE TUBE is capable of a very good range of applications. While a pedal always has certain limitations
vs. rack systems, care has been taken to make your
pedal as “PRO” as possible.
GENERAL GUIDELINES
1. In order to get the cleanest possible sound, set the
“Output” control to maximum and use the “Drive”
control as you would a standard volume control.
2. To get more Tube coloration and some overdrive,
reduce the “Output” control setting and increase the
“Drive” control setting.
BLUE TUBE
Concept & Design: B.K. Butler
SPECIFICATIONS
VOLTAGE REQUIREMENT :120 VAC, 9 WATTS
TUBE TYPE :12AX7A/ECC83 - SELECTED
INPUT IMPEDANCE :1 MEG. OHMS
S/N RATIO :70 dB (Typical)
HUM & NOISE :-85 dB (Typical)
OUTPUT IMPEDANCE :10 K OHMS (Typical)
OUTPUT LEVEL :0 dBV (.78 V Typical)
SIZE (IN INCHES) :(HxWxL) 3.0 x 3.2 x 5.0
WEIGHT :3 LBS.
GENERAL NOTES
Although the BLUE TUBE is very ruggedly housed in heavy
gauge steel, care should be given to the unit as tubes are
made from glass. Avoid physical abuse. A soft touch to the
footswitch is all that is needed to switch the unit. You will
notice the absence of a power switch on the BLUE TUBE.
This was intentional on the part of the designer. There is no
possibility of unwanted power loss during a performance,
and power switches are just one more area of eventual
wear-out that has to be avoided. BLUE TUBE has been designed for prolonged periods of continuous use without
overheating or damage. It has been observed that the
BLUE TUBE sound is actually enhanced with use as the
tube ages.
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