Belkin Rockstar Multi Headphone Splitter (five outputs) for $9

The white-blue-cyan color scheme of the unpowered Belkin Rockstar Multi Headphone Splitter (one input, up to five outputs) is currently on sale for $9 at by Amazon. You can buy as many as you like. This is not part of the Add-On program, so if you are a Prime member, you get free 2-day shipping even if you only buy one. The other six color options go for $14+. They average 4.7 out of 5 with nearly 200 customer reviews. Keep in mind, since this is not powered, the number and type of headphones you attach to will impact the volume (“insert math-physics here”).