Reply to adjustable-delay power strips?

Hey there, i always got this problem in my little home studio, where i have my monitors connected to a Mackie Big Knob, and i have them all connected to the same power strip. And when i turn it on, it seems like the transformer of the Big Knob has just a split-second delay to when my first monitors power up, resulting in a loud pop and, of course, strain on the speakers themselves.

Now as soon as i realized this, i started shutting down the monitors from the switches behind them, but this can get very frustrating at times.

So i was wondering, without buying a power conditioner (which i am as soon as i get the funds, but those things aren't cheap at all), do any time-delayed power strips exist? That let me set my monitors to turn on a set time AFTER power gets to my Big Knob? Anyone know of such a device?

Help is appreciated
L