Voltage question?

I suggest you contact Dallas Clarke of Clarke Audio in Melbourne. He does a lot of this stuff and will be able to tell you how much it would cost. He is a very highly regarded technician. Hope this helps.

http://www.clarkeaudio.com

Thanks Phaser,
May be I rephrases the Question. I would like to know if Audio Research's amp has switches which change voltage from 110 - 240V something like that. I am talking about pre-amps and power amps like ref.2 or vt100 or 200.

NO they don't. I technician should be able to change the voltage to 240vlts on the pre amp.
NOt sure on the power, but I doubt it - it generally has a special 240vlt transformer for power amps.