6.35mm Plug to 3.5mm Socket (Pack of 2) 1/4 to 1/8 inch Stereo Audio Jack Adapter | Converts Audio from Amplifiers, Guitar, Piano, Drums, Speakers & Mic That use 6.35mm to 3.5mm Port - Walmart.com
Amazon.com: 2 pcs 1/4" Stereo Audio Plug Connector Metal Spring Relief 6.3mm Phono Nickel Plate Shielded Solder Terminal 1/4 Male Stereo Audio Video Jack Plug Connector Adapter A/V Connector : Electronics
3-Pack 1/8 3.5mm Male to 1/4 6.3mm Female Stereo Headphone MIC Adapter | eBay