THE ATU44 (PZA)

Universal input adapter

The ATU44MK2 is a universal input adapter unit for converting between various audio level signals, offering a wide variety of connection and extension possibilities to audio systems. 

The speaker-level input features multiple taps for 100V, 70V, 50V, and 33V audio levels, while a balanced line input allows conversion between balanced and/or unbalanced line-level audio signals. A typical application example is the conversion of any speaker level audio signal to balanced or unbalanced line level signals. 

Any type of speaker level signal can be applied to its input. This can be useful for expanding any constant voltage distributed audio system and for feeding the transformed output to an additional amplifier. Another typical application is the connection of recording equipment to speaker lines. Using galvanic isolation between all inputs and outputs, can be used as an audio isolation solution, solving hum and buzz problems caused by ground loops. 

The front panel switch allows you to select the input signal between line or speaker level input, while all inputs are connected via terminal block connectors. The line output is connected via an XLR connector.