In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. The Multigate Pro XR4400 is a state-of-the-art 4-channel expander/gate. It combines four frequency-selective expanders/noise gates in a single rack space without compromising the least bit of functionality. With the Multigate Pro, you've got a precision instrument that offers easy operation yet unbelievably powerful, flexible control possibilities. Noise is suppressed during quiet passages and crosstalk between microphones reduced. The Multigate Pro is especially effective for complex microphone separation in drum-set miking.