The 2000 mA at +12V is only available if you're powering the uZeus with the 3000 mA boost brick which is capable of delivering that power. If you're using the 1000 mA wall adapter then that's not going to cut it. Also note that certain tube modules but also some digital modules I think sometimes draw extra power at start-up, it's possible that Poly Hector is one, though I'm not familiar with it so I can't say that with any certainty. But yeah if you don't have the boost brick then you should get one, they're usually about $35 (US).