Audio Splitter captures audio from any Chrome tab and routes it to multiple output devices at the same time — Bluetooth headphones, wired speakers, USB DACs — without virtual audio cables or system changes. Built this because my household had one laptop and two people who wanted different audio. Now we both listen to the same YouTube video on our own headphones. Free tier: 2 simultaneous outputs. Pro: 5 outputs, per-device EQ, channel splitting, and delay compensation.