ML1 Wall-Mount Counter Induction Loop Amp (UK Double-Gang Box)The ML1 is a compact audio frequency induction loop amplifier capable of generating a loop listening field of approximately 1. 2m2 if used with the TX2 counter loop (supplied in the MK1 K kit), making it ideal for restricted person to person contact in areas such as banks, post offices, ticket counters, etc. Designed to fit on a standard UK 25mm double gang back box, it has a self contained mains power supply, a microphone input, a balanced line level