Run up to 8 frequencies at once.
The GB-4000 is the only instrument that is capable of running up to 8 frequencies simultaneously to 40,000 Hertz without frequency degradation. And it comes with that capability straight out of the box. No need to purchase additional equipment like some other machines on the market.
Running up to 8 frequencies at a time makes it up to 8 times faster than any other instrument. Why wase your time running one frequency at a time? And since the GB-4000 is so much more powerful than mose other machines available, it has plenty of horsepower to run those frequencies at the same time. It's like getting 8 frequency generators for the price of one.