Great unit - in great condition and has only been used in my smoke-free studio. I'm the first owner and this one was built in 2011. I used this to switch between my main monitors and my reference monitors. It also has two headphone amps so you can use it to run phones while you track.

$500 shipped/PayPal'ed

Info here: SPL 2 Control Speaker & Headphone Monitoring Controller | VintageKing.com