creek 5350 se integrate amp repair in chicago?

My Creek 5350se integrated amp has distort (unpleasant) sound while turn up or down the volume from both side of the speakers.

Does anyone know good and reliable repair shop in Chicago?

Please help me ...thank you so much.
Van L Speaker Works on North Western Ave in Chicago, call him and ask.
Did you get it repaired? If so, by whom and to what result? Thanks!