BASN Bsinger Professional in Ear Monitor Headphones, Dual Drivers 2-Pin IEM Earbuds with Mic, Clear Sound HiFi Earphones for Musicians Drummers and Stage (Black, 2-Pin) Black 2-Pin is up for auction in Musical Instruments. The current bid is $9.00, 82% below the $48.99 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.