Amazon.com: 6.3mm 1/4" Male Plug to 3.5mm 1/8" Female Jack Stereo Headphone Audio Adapter (Pack of 10) : Electronics
1/4 Inch Stereo Male to 3.5mm Stereo Female Adapter
C2G 3.5mm Stereo Male To 6.3mm Mono Female Adapter 40635 B&H
The Mizzou Store - C2G 6.3MM to 3.5MM Stereo Adapter
Cheyenne Hawk 3.5mm to 6.3mm Adapter Cable — 5th Avenue Studio Supply
3.5mm Stereo Jack Female to 6.3mm Stereo Jack Male Adapter - from LINDY UK
AudioQuest 3,5-6,3 mm Jack átalakító - KáCsa Audió
3.5mm to 6.3mm Jack Adapter Mono – KOMA Elektronik
Sennheiser 6.3 mm F to 3.5 mm M jack adapter - VSystem
Sennheiser 6.3mm Female to 3.5mm Male Adapter Cable
Metal Adapter Plug 2 Mono Male 6.3mm To Female 3.5mm Audio Adapter Plug 6.35mm Mono Angle Audio Cable - Plug & Connectors - AliExpress
Nimo 6.3 mm To 3.5 mm Headset Adapter Silver | Techinn
Adapter 6.3 mm jack to 3.5 mm jack | In-Ear, Noise-Canceling, Wireless, Bluetooth, Music; Entertainment, Travel, Sports - Sennheiser Discover True Sound