GOP-100, Grid Overload Protector
GOP-100 is Grid Overload Protection for all Amplifiers.
The GOP-100 protects your amplifier`s tube from excessive grid current. Fast acting electronic circuit rapidly disables the amp if excessive grid current conditions occur. Easy to install in your Ameritron amp. Factory installation available with the GOP-100X.
GOP-100X is Grid Overload Protection Factory Installed in Your Amplifier.