Amazon.com: Mobi Lock 3.5mm Plug to 6.35mm Socket (Pack of 2) 1/8 to 1/4 inch Stereo Audio Jack Adapter | Connects Devices with 3.5mm Port to Your Amplifiers, Guitar, Piano, Speakers &
3.5mm FEMALE MINI to 6.3mm MALE JACK ADAPTER STEREO HEADPHONE CONNECTOR 665659351226 | eBay
Amazon.com: CableCreation 6.35mm Stereo Plug to 3.5mm Stereo Jack Adaptor, 6.35mm Male to 3.5mm Female with Screw,Gold Plated : Electronics