12VDC to 9VAC

[soundhound]

I am looking for a circuit that will enable me to run this EQ in my car.

http://www.behringer.com/EN/Products/FBQ800.aspx

I know I could use a power inverter, but I would rather make a circut to power this in my car.

The output power needs to be 9VAC, 50Hz, 800mA.


Any ideas would be great!