Impulse

The Impulse is the default starting weapon when you begin the Cronus Frontier missions. It has a moderate rate of fire and moderate projectile speed. In multiplayer the Impulse is a modified version of the Quad (Q) upgrade.

Base: Standard dual energy shots. Uses .25 Energy per shot.

Plus (+): More damage and impact force per shot (~20% each)

Quad (Q): Four shots at once with reduced rate of fire (~15%). Also, Energy use/shot increases by about 60%, while damage and impact force are about twice that of base weapon.

Rapid Fire (RF): Higher rate of fire (~20%), faster shots (~30%), and lower Energy use (~20%)

Additional Details
THE STANDARD IN ENERGY WEAPON DESIGN FOR THE PAST 21 YEARS, THE IMPULSE IS KNOWN FOR ITS EFFICIENT USE OF ENERGY AND DURABILITY. THE DESIGN IS SO WIDESPREAD THAT VARIATIONS OF THE IMPULSE HAVE BEEN MANUFACTURED BY 11 DIFFERENT CORPORATIONS. JUNO OFFWORLD AUTOMATION'S DESIGN IS 3% MORE EFFECTIVE IN ITS ENERGY USAGE THAN THE MOST WIDLY USED IMPULSE DESIGN, THE ASTEROS IEC-2R.