If you need to change the AC voltage of your Coleman Audio product. Just open the top and switch the voltage selector switch from 115V to 230V. It's located on the power suppy near the power transformer.

If you don't see exactly what your looking for send an email describing what you need to: coley@colemanaudio.com Or give us a call and tell us what you need. We are a customer driven company. Most of the products here came from the ideas and needs of engineers like yourself. Your idea might not become a product but we do custom work too.