Check the listing for details. Truetone One 1 Spot Reverse Polarity Converter Adapter CYR Visual Sound. Condition: New. Listed at 7.95 USD. Truetone One 1 Spot Reverse Polarity Converter Adapter CYR Visual Sound The 1 SPOT CYR Reverse Polarity Converter allows the 9V adapter to be used with Yamaha Keyboards, Samplers, and Drum Machines, as well as certain reverse polarity effects pedals. Return Policy: Our return policy is 30 days from date of purchase, buyer pays return shipping in cases involving fully functional products returned for reasons resembling general dislike of the product, or no longer needing the product. In such a scenario there may or may not be a restocking fee. In the unfortunate event that a buyer has recieved a malfuctioning or broken product, we will replace the item or refund the buyer and provide a pre-paid return label in most cases. Feedback: If, for any reason, you have had a less-than-stellar experience purchasing from us, PLEASE CONTACT US PRIOR TO LEAVING NEGATIVE OR NEUTRAL FEEDBACK. Customer satisfaction and the resulting feedback is of upmost importance to us, and we will do everything we can to remedy the situation for you.