The MP221 preamp was designed for use with Ampetronic Induction Loop drivers, but can be used in other applications as a separate four input pre-amp. The unit is designed to amplify two microphone channels by a maximum of 46 dB, and two linelevel inputs by 6 dB.
Each channel has an electronically balanced input. Microphone channels use XLR input connectors, with phantom power facility. Balanced line-level inputs use 6.3 mm jack sockets. A gain control is provided for each channel, and the combined output signal is electronically balanced.
Power for the preamp is normally obtained from the host Ampetronic amplifier, but the unit can be powered from a small, separate power supply, Ampetronic type PS3.
