That image of Marty getting his ass blown across the room shares my sentiments when I had the GO 450. It's the only USB DAC that I know of that behaves like that. After owning it the second time around, thinking "I'll be sure to not have my iem/ciem plugged in, and/or manually lower the volume (WIN machine) prior to plug in" it was the only time my boys heard me yell, "F#$!", and my ears were ringing on/off for hours after those incidents.
I hope that once LH gets off their "pie in the sky" aggressive approach to their crowd funding projects, which IMO has been half-baked with no end in site. Then maybe I'll pick up another GO once they fix that infamous lethal and deafening volume feature.