wadia 830-how to adjust internal volume

does anyone have experience changing the wadia 830 internal volume settings ? I opened it up and didn't see anything obvious thanks, db
it's a piece of cake. call wadia and they'll fax you the sheet on how to do it. if you can't reach them, e me and i'll get it to you.
David. I have the pages that Wadia sent for adjusting the voltage output. Send a number and best time to call. I can copy themand fax or mail. Bruce
wadia is hard to get in touch with these days maybe someone can describe the location of the controls thanks again db