AS531 Adapter, 1/4" Stereo Jack to 3.5mm Stereo Plug - 1/4" Stereo - Phono Plug (Motorola) - Adapters
Amazon.com: 6.3mm 1/4" Male Plug to 3.5mm 1/8" Female Jack Stereo Headphone Audio Adapter (Pack of 10) : Electronics
6.35mm (1/4 Inch) Stereo Plug to 3.5mm Stereo Jack Adapter - Gold Plated - Walmart.com
3.5mm to 6.35mm Stereo Jack Adapter 5-Pack, 3.5mm to 6.35mm Audio Connector Converter, 6.35mm to 3.5mm Aux Plug for Headphone, iPod, Receiver, Guitar, Mixing Console,Home Theather - Walmart.com
Amazon.com: Headphone Jack Adapter 6.35mm 1/4Inch Male to 3.5mm 1/8 Inch Female Jack Headphone Audio Stereo Jack Plug Adaptor Converter (6.35mm (1/4 inch) Male to 3.5mm (1/8 inch) Female) : Electronics
MEE audio 3.5mm to 2.5mm stereo audio adapter for select Sennheiser, JBL, Klipsch, and Bose headphones
Amazon.com: Insignia 1/4"-to-3.5mm Mini Headphone Jack Adapter - Black : Electronics
Monster Just Hook It Up Stereo Jack Adapter 1 pk - Ace Hardware
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