Aurex AD-15 Automatic Dynamic Range Expansion System

This Aurex AD-15 is a noise reduction system with Adres noise reduction, it was first sold by Aurex in 1978 and discontinued 5 years later in 1983.

The features of the AD-15 include.

The Toshiba Adres noise reduction system used in the Aurex AD-15 expands the tape playback dynamic-range greatly right across the frequency range reaching an incredible 100dB at 1kHz. Signal-to-noise ratio is improved dramatically: by 30dB at 10kHz eliminating all tape hiss, and 17dB at 100Hz. The 19kHz multiplex pilot slgnal present in FM stereo broadcasts can cause false triggering of the noise reduction system. The switchable MPX filter of the AD-15 filters out the pilot signal, and assuring proper Dolby processing of FM stereo programs.

Connection to other audio components for plaback can be achieved by a RCA cable and recording from a source by a RCA cable.