QUOTE(mcp2012 @ Mar 14 2012, 07:16 AM)

Hi
i have a PS-400. It voltage is 240 volts now. I want to adjust the voltage to 220 volts.
How can I do? I can not find the operating instructions in its manual.
The attachment is its manual.
Can you tell me how to adjust the voltage to 220 volts ?
my english is very poor. Please describe as simple as possible.
Thank you very much

Hello again,
If I understand correctly then you would have to open the amp and change the connections to the actual transformer within the amp, I wouldn't bother with that since the amp is rated at any of the voltages with +/-10% so if you take an amp that's set to 220V and operate it on 240V, it's still within the acceptable range.