RustySpoon#,

The problem with splitter connectors is they change the impedance, or how much of a load is placed on each headphone circuit. An analogy would be connecting equipment that draws a lot of electricity (like a heater or hair dryer) to all the connections on an electrical extension cord and using them all at one time. The extension cord would overheat and the electrical circuit shut down. That is what the splitter is doing, just on a smaller scale.

The passive mixers match each output to the equipment connected. The overall audio volume is lower because the volume is directed to multiple locations but the audio shouldn't break up because the output matches the equipment.

One alternative is to search for a pair of wired surround sound headphones. Wired surround sound headphones have multiple input cords sending multiple audio signals to multiple left and right drivers, or speakers.

I found some blue tooth surround headphones but they require a blue tooth transmitter per device and latency is an issue.

Jim Fogle - 2025 BiaB (Build 1128) RB (Build 5) - Ultra+ PAK
DAWs: Cakewalk Sonar - Standalone: Zoom MRS-8
Laptop: i3 Win 10, 8GB ram 500GB HDD
Desktop: i7 Win 11, 12GB ram 256GB SSD, 4 TB HDD
Music at: https://fogle622.wix.com/fogle622-audio-home