Rare Kenwood Model RC-44 Quadraphonic 4-Channel Volume Controller

I found this rare odd ball at the Philly Aides Benefit thrift shop for $3 in 2009. I have not been able to find another like it on the internet since purchase.

After uploading the pics I realized there is no sub-cat for Solid state stereo's. If this is wrong category let me know I will delete. I have many solid state systems to post if ok under "Radios"