The ATT30 is intended to interface a low impedance speaker output to a high impedence balanced line input such as those found on Ampetronic preamplifiers and induction loop amplifiers. The unit provides a balanced resistive attenuation of -30dB.
The standard version of the ATT30 is not suitable for use with unbalanced or low impedance inputs, nor should it be connected to microphone inputs of any type. It should not be used with 100V line speaker systems; use the ATT100 instead.
