EXT amplifiers from npi are designed for low noise recordings of extracellular electric signals. All amplifiers are designed as modular systems to enable customized signal processing configurations. Models include: analog displays for potential, variable gain up to 10k, offset and capacity compensation and tunable highpass/lowpass filters. Most systems are equipped with a small headstage with high impedance differential inputs to suppress noise and other distortions.
The EXT-08 was designed for performing low noise recordings of small extracellular signals in slices or in vivo preparations using fine tipped glass or metal microelectrodes. The system consists of a module for the EPMS-07 system and a small headstage.