NeuroPhase LLC is a manufacturer of the Brownlee Precision line of laboratory amplifiers, specializing in high-performance amplifiers tailored for electrophysiology research. Their flagship product, the Model 440, is a four-channel analog amplifier with features like high gain, low noise, and high impedance input stage, along with filtering options. NeuroPhase designs and manufactures advanced biomedical sensing and instrumentation systems under the brand Brownlee Precision, offering researchers in neurophysiology reliable and feature-rich products. The amplifiers are rack-mountable, with 4 independent channels, bright LED readouts, and convenient front panel controls.