Thank you for having an interest in our availability for part number NCP2809BGEVB, a Eval Board For Ncp2809b Class Ab Headphones 2-Channel (Stereo) 135Mw X 2 @ 16 Ohm 2.2 V ~ 5.5 V - Fully Populated Ncp2809 Board . item we feature that is manufactured by On Semiconductor. In order to receive pricing information on this particular Programmers Development Systems listing, please fill out and submit the Request for Quote (RFQ) form that is provided below. As the form is partially completed for you with details concerning this board-level electronic component, simply offer us information like your target price, desired quantity, and when you need parts by. Once you submit a request and our team receives and reviews it, you will be contacted by a dedicated account manager in 15 minutes or less to continue the procurement process.