1010music Bluebox Digital Mixer and Recorder Eurorack Module | Sweetwater
4 in 1 out Mini Stereo Passive Mixer Module Audio Mixer fr Studio Recording H5R4 | eBay
Vistreck 4-in-1-out Passive Mixer Module Mini Stereo 4-Channel Passive Mixer Audio Mixer 4 Audio Input to 1 Output Ultra Compact Low Noise for Recording Studio Console Stage Small or Bar - Walmart.com
Poltergeist – Quadraphonic Mixer (Discontinued) – KOMA Elektronik
Mixup - Midwest Modular
4-in-1-out Passive Mixer Module Mini Stereo 4-Channel Passive Mixer Audio Mixer 4 Audio Input to 1 Output Ultra Compact Low Noise for Recording Studio Console Stage Small or Bar - Walmart.com