The Digitimer D440 Isolated EMG Amplifier is a a portable and standalone, low noise solution for human EMG studies, specifically those related to nerve excitability. The D440 features an amplification range of x100 to x20k. The gain, filter and mode settings for individual channels are adjusted using our own “virtual front panel” software or other software via a COM interface. The D440 is available in two versions, the D440-2 – a 2 Channel Isolated Amplifier – and the D440-4 – a 4 Channel Isolated Amplifier.