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Four-Channel Matrix Power Amplifier
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Precautions for safety in use
1. Precautions for safety in use
Before connecting the system line properly, do not insert the power plug of this equipment into the grid.
Ensure the voltage input to the equipment shall be fully consistent with the voltage of this equipment to
prevent the risk in the burning of the equipment.
There is the hazardous voltage in the machine, which is sufficient to cause the electric shock to the person.
Please do not open the machine housing without authorization to prevent the hazard of electric shock.
In the event that the power supply to this equipment is turned off, the machine is not fully disconnected with
the power supply of the grid. For the purpose of safety, please pull the power plug out of the socket when the
equipment is not in service.
Please do not put the equipment in the extremely cold or hot place.
Ensure the good ventilation in the working environment of the equipment, to prevent the damage to the
equipment due to the heating in working and excessively high temperature.
In the rainy and humid days or if the machine is not in service for a long term, please pull out the power plug.
Before removing or reassembling any part of the equipment, disconnecting or reconnecting any electrical
plug or other connections of the equipment, be sure to pull out the power plug to ensure the full
disconnection of the equipment with the grid.
In case of any fault in the equipment, the non-professional person shall not disassemble the housing for repair
without the approval, in order to prevent accident or aggravate the damage to the equipment.
Do not put any corrosive chemicals nearby or on the equipment.
2. Precautions for after-sales service
In case of the installation and operation according to this instruction, the company will provide the free
warranty service (Including replacement of parts free of charge) for any problem in the normal operation for
three years since the date of purchase.
In case of the warranty, the user shall show the user’s voucher of warranty card and the invoice as the
certificate.
In any of the following cases, the free warranty shall not be applicable:
1. The damage to the product due to the incorrect installation, use or handling;
2. The damage to the product due to the abnormal conditions (e.g. excessively high power voltage or ambient
humidity);
3. The damage to the product due to natural and man-made disaster and other accidents;
4. The number on the product body is changed, altered or removed;
5. The product has been repaired or refitted by the person other than those authorized by the company;
Please keep the operation instruction and warranty card properly.
For the issue or matter not covered herein, please contact the distributor or visit
In case of any fault occurred during the period of warranty, please contact the service personnel of our
company (or distributor); our company will not take responsibility for the damage due to the unauthorized
disassembly or the repair by the person other than the technicians of our company.
