3 channel charge/IEPE amplifier with x1, x10 and x100 gain individually selectable per channel. Each channel can be switched from Charge to IEPE conditioning. DC powered for ease fo use in the field or laboratory. Earth/Floating configuration.Compact & Lightweight chassis IEPE/Charge amplifier, channel selectable Individual channel gain selection x1, x10, x100 Power on indication Signal level indicator per channel ?10VAC output DC powered, Mains adaptor supplied Huge flexibility in a low cost per channel unit