3.5mm Stereo Jack Splitter. 3.5mm stereo jack plug to 2 x 3.5mm stereo sockets. 3.5mm Stereo Plug to 2 Sockets. 3.5mm Stereo 3 pole connector suitable for headphone inputs. Tough plastic body with gold plated connectors.
eBay
3.5mm to Double RCA Audio Cable AUX RCA Jack Y Splitter Cable Splitter For Amplifier Jack Auxiliary Wire HIFI Audio Connector
Aliexpress UK
4-position 3.5mm to dual 3-position 3.5mm headset splitter adapter features one 3.5mm male plug and two 3.5mm female connectors, allowing you to add a mono microphone input as well as a stereo output to your PC or Laptop, through a single 3.5mm audio port.
eBay
3.5mm Audio Splitter Cable for Computer Laptop Jack 3.5 mm 1 Male To 2 Female Microphone Headphone Y Splitter AUX Cable
Aliexpress UK
Upgrade your audio and charging experience with the USB-C to Type-C 3.5mm Headphone Charging AUX Audio Splitter Cable Adapter. Enhance your device's functionality with the USB-C to Type-C 3.5mm Headphone Charging AUX Audio Splitter Cable Adapter.
eBay
Headphone Splitter 3.5mm 2 Way Aux Male to Female Earphone Audio Adapter Double Stereo Y Splitter Cable For TV Phone PS4
Aliexpress UK
Stereo jacks for connecting with headphones, ipods, cellphones,players, or other stereo audio devices.
eBay
Bluetooth 5.0 Transmitter Receiver Wireless Audio Adapter 2 in 1 A2DP 3.5mm Jack Aux Bluetooth Adapter For PC TV Headphone Car
Aliexpress UK
3.5 mm stereo jack plug to 2 x 3.5 mm stereo jack sockets. Allows two pairs of headphones to listen to one iPod/iPhone/iPad etc. Net weight (kg): 0.02.
eBay
Type-C In-Ear Wired Karaoke Headphones 3.5mm Stereo Music Earbud Handfree Headset Earphones with Mic For Xiaomi Huawei IPhone
Aliexpress UK
Headset Adapter Y Splitter Jack Cable with Separate Mic and Audio Headphone. 1 x Audio Splitter Cable ONLY. Application: For new notebook, tablet, smartphone, netbook and so on the audio port (microphone MIC + headset) is made into one, that is, only one audio interface, use this product conversion, you can connect two 3.5 plugs separate computer Headphones (microphone MIC + headphones).
eBay
Earphones 3.5mm Sport Earphone Super Stereo Headsets Sweatproof Running Headset With Mic Ear Hook Headphone for Meizu Headphone
Aliexpress UK
3.5mm stereo audio splitter Male to 2 Female headphone audio adapter cable. 1 x 3.5mm Mic headphone splitter audio cable. Music lovers sharing headphone adapter. Adapter cable extension cord. Connector B: Two 3.5mm Female.
eBay
USB Bluetooth 5.0 Transmitter Receiver 3 In 1 Adapter 3.5mm AUX Plug And Play For TV PC Headphones Home Stereo Car HIFI Audio
Aliexpress UK
This Headphone/Microphone splitter (4-position 3.5mm to dual 3-position 3.5mm) is a headset Splitter Adapter featuring. 5mm Male and two 3.5mm Female connectors, enabling you to add a mono microphone input, as well as a stereo output to your PC or Laptop, through a single 3.5mm audio port.
eBay
1PCS 30cm 3.5mm Jack Aux Cable Male to Male Gold Plated 90 Degree Angle Audio Cable for MP3 Car Headphone Phone Speaker
Aliexpress UK