I have a Samson s-convert in excellent condition for sale. I want to get $50 shipped to the lower 48 and that will include an RCA to Xlr adaptor and an RCA to double rca splitter. These are no longer being sold by Samson so there are not many around anymore. It is used to bring up your subwoofer preout voltage from consumer level to Pro level so your pro amp will be able to put out it's full wattage. Here is the info on it. Paypal for payment. Thanks for looking. https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CB4QFjAA&url=http://www.samsontech.com/samson/products/processors/s-class-mini/sconvert/&ei=0KRXVJmlJcnksAS8wYKwCA&usg=AFQjCNEd97FY6Hi0pI55TMAgobi3edMf1Q&bvm=bv.78597519,bs.1,d.dGY