PowerBox iGyro SAT II For Pioneer SR2 Powerboxes & Powerbox Receivers 3610PowerBox iGyro SAT II Generation 3 For Pioneer, SR2 Powerboxes & Powerbox Receivers New hardware same performance! The iGyro SAT II replaces the earlier iGyro SAT, both are backwards and forwards compatible. All gyro settings in the PowerBox or the receiver are absolutely identical. However, we have been able to further improve immunity to turbine noise thanks to a new manufacturing process. Noise protection bonnets or similar measures were already