3UJKR 68531//
2
Print edition MELODY INTERNATIONAL HOLDINGS PTY LTD
Preparation before use
Your pro88mkii 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
Power indicator: LED (yellow)
When the machine is turned on, the indicator light is yellow
Power switch on / off (in front of the machine)
It is used to turn on and off the amplifier power supply
Transfer switch: I II III IV V
It is used to select the sound source, and five channels of sound source input
can be selected.
volume control knob
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.
Adjust the tube current switch
It is used to adjust the current of output power transistor KT88, and each
KT88 tube is adjusted to 45~50mA, ( if you used kt120 tube, this tube is
adjusted to 60~65Ma. If you used kt150 tube, This tube is adjusted to
65~70mA )
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
