Integrated amp, best conversion 220 to 110 volts?

Many devices are built with a transformer that has taps for 220 and 110V. In that case all you need is a service technician that opens the unit and changes the taps from 220 to 110, and you are ready to go. Check if your Marantz is made like this. I have had this done with Rotel, McIntosh, and know Bryston is the same. It cost me all of us$50 per unit. BTW, initially I was told by McIntosh I had to change the torroid in the amp...fortunately had a reliable service tech who said otherwise.

Let us know if this works.

Thanks for the tip, Lewinskih01. There aren't any extra wires coming off the torroid, however -- all wires are being utilized. This suggests to me that I need to replace the transformer.

Just because all of the wires are used, doesn't mean it isn't convertable. A transformer designed for both 110 and 220V operation will have 2 primary windings. When wired for 220, the 2 primaries are in series and when used for 110, they are in parallel.

Aha. OK, thanks, I'll take it to an audio tech to check it out!

Audio tech says the torroid is custom made and there aren't two primary windings so I have to either replace it or use a step-up xformer. Suggestions?