SH-8 as a preamp
DC supply for effect pedals
TUBES
Precautions
Amplifier produces high volume levels. Staying in places of high volume levels
could cause permanent hearing loss.
Do not use the amplifier in humid and dusty places.
Do not operate the amplifier through the unearthed socket.
Do not leave the amplifier in the vicinity of children.
Do not use the amplifier with broken power outlet or improper power cord.
Do not install nor use the amplifier near any heat sources, in case of overheating
the amplifier turns off
Do not cover the
vent holes!
In order to ensure proper air circulation, do not block any of the ventilation
openings.
Never put any liquid containers near the amplifier.
In case of any objects or liquid access inside the amplifier, urgently switch the
apparatus off and unplug the power supply cord.
Protect the amplifier from any strikes.
ATTENTION: To reduce the risk of electrical shock, do not remove the back cover
of the amplifier. Inside parts can be repaired only by qualified service personnel.
WARNING: To prevent the risk of electrical shock do not expose this appliance to
moisture, rain or any liquid.
and will return to work after cooling the unit.
Optimal operating parameters of tubes 12AX7 are set during amp's manufacturing
process. The characteristics of each tube in the amplifier is individually tuned at MTD
system (Master Tube Design), to achieve the best performance possible. It is not
recommended to replace the tubes. Replacing working tubes with some other brand will
not improve the sound. The 12Ax7 are already tuned to perform at maximum capability.
Only broken tubes should be replaced.The tubes in MTD technology works in perfectly
designed environment which allows them to have very long life span. If not mechanically
damaged there is no reason to change them for years
The SH-8 Qube can also be used as a preamp alone, connected to an external PA
system or mixer via the LINE-OUT, without speaker connection necessity. If a speaker
wire is not connected to the amp's speaker OUT the amp's power stage is inactive.
The amp is designed with output that allows powering external sound effects. It means
that there is no need to use an additional power supply and the set of effects in the
pedalboard gains additional space. The maximum power supply load is 350mA.
Assuming an average consumption of 60-80mA per effect, 4-5 pedals can be practically
powered. If the maximum load of the power supply is exceeded, the red LED (12-back)
will light up.
