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Thank you very much for choosing Shuguang Audio Classic Series vacuum tube
pre-amplifier.
Please read this manual in its entirety before you turn on the amplifier for the first time.
About Shuguang Audio
Shuguang Electron Group (aka Shuguang Electron) currently is the world’s largest vacuum
tube producer. The group was formed in 1958 and over the past decades, Shuguang has
designed and manufactured many high quality audio vacuum tubes and they are used on
tube audio products under many brands.
Shuguang Dongsheng Electronics Co. Ltd (aka Shuguang Audio) is a subsidiary of
Shuguang Electron Group, specialized in high end vacuum tubes and tube audio design,
manufacture and distribution.
This Shuguang Classic series vacuum tube amp is one of Shuguang Audio’s many
products.
Caution!
This product should only be used with its specified power supply voltage /
frequency to ensure safety and longevity.
If the product is not in use for extended period of time, please unplug the unit
from your power supply.
When the product is powered on, do not touch the vacuum tubes with bare
hands or any materials that could melt at high temperature. Tubes operate at
extremely high temperature and could cause serious burn to exposed skin.
Children should be kept away from a tube amplifier, no matter if it is powered on
or off for safety precautions.
The product should be kept in a dry area, without excessive moisture and has
absolutely no contact with liquid.
Tube amplifier produces heat during operation – it should always be kept well
ventilated. Do not install them inside an enclosed cabinet.
