Model: MDA2
2
Print edition MELODY INTERNATIONAL HOLDINGS PTY LTD
Preparation before use
Your MDA2 amplifier and vacuum tube are packed in sponge. These sponges that
protect the vacuum tubes must be removed before you attempt to operate the
amplifier.
Front panel function description
x
Power indicator: LED (yellow)
x
When the machine is turned on, the indicator light is yellow
x
Power switch on / off (in front of the machine)
x
It is used to turn on and off the amplifier power supply
x
Transfer switch: I II III IV V
x
It is used to select the sound source, and five channels of sound source input
can be selected.
x
volume control knob
x
This knob can control the volume of the sound. The volume is gradually
increased by turning it clockwise, and the volume is gradually increased by
turning it anticlockwise Gradually decrease.
x
Adjust the tube current switch
x
It is used to adjust the current of output power transistor 2A3, and each 2A3
tube is adjusted to 30~35mA.
Warm tips
: MELODY company reminds you not to blindly pursue perfect sound quality,
24 hours a day. This method is not suitable for vacuum tube amplifier. Because the
service life of the electronic tube is only 2000 hours, equivalent to 84 days
