Let's come North again smile

Has anyone had experience with the Bose F1 array (by itself, not with the sub either). Also, it has stereo inputs. Would this be a more advisable way to hook up the keyboard, or just go 1/4" into both lines in, or just a single line in?

Interesting way to lighten the load.
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Yamaha 920 / Yamaha DGX-670 / Maui 5 Go (2) / Senn e935 / Sony C80 / Tascam DP24sd / ATEM Mini Pro switcher (studio)