Tomost Angled 2.5 mm Male to 3.5 mm Female 4 Pin 2.5 to 3.5 mm Stereo Headphone Headset Converter: Amazon.de: Electronics & Photo
Amazon.com: Poyiccot 2.5mm to 3.5mm Audio Cable, 90 Degree Right Angle 3.5mm 4 Pole Male to 2.5mm 3 Pole Male Headset Stereo Audio Aux Extender Stereo Jack Cable 20cm (3.5 M/ 2.5 M) : Electronics
Delock Products 65673 Delock Audio Cable Stereo jack 3.5 mm 4 pin male angled > Stereo jack 2.5 mm 3 pin female
20cm 8" 2.5mm Headphone To 4 Pin Xlr Female Aux Cable Trrs Audio Jack Pole 7n Occ Copper Silver Plated Adapter Cable - Audio & Video Cables - AliExpress
DEXP
3.5 mm 4 pin male stereo audio jack or 3.5 mm 4 pin male adapter to 2.5 mm female Tools Sennheiser - Sikumi.lv
Oem Jack 2.5 Macho 4 Pin A Jack 3.5 Hembra 0.15 M Audio Stereo Cable Black| Techinn
1Pcs HIFI Gold Plated 2.5mm Audio Jack 4 Poles Balanced Earphone Plug Adapter Headphone Wire Connector for Sennheiser Momentum| | - AliExpress