Radial Engineering MC3 Monitor Control Studio Monitor Controller in very good condition with original Radial power supply.
This is a great monitor controller that I've used often with two sets of monitor speakers. Both monitor outputs have separate level controls. It also is a great headphone amp with two 1/4 inch headphone outputs and also a 1/8 inch headphone output. Also has a separate sub output and aux output. And controls for Dim / Mono / Sub, too.
Currently retails for about $350:
https://www.frontendaudio.com/radial-mc3-monitor-controller/?gad_source=5&gclid=EAIaIQobChMI0_aVoP_diwMVLBCtBh0GAyZFEAQYAiABEgIufvD_BwE
Link to the manual:
https://www.radialeng.com/wp-content/uploads/2018/04/mc3-manual-web.pdf