Ado receiver (sound sharper)

The SS-115 (also known as ADC Sound Shaper SS 115) is a Stereo Frequency Equalizer (also known as Graphic Equalizer) manufactured by the ADC Professional Group in Japan. It has ten frequency bands per channel ranging from 31.5-Hz to 16-kHz, with boost and cut ranging ±15-dB. It has stereo line in and line out facility as well as stereo input/outputs for two tape decks with switched dubbing options. It is very similar to the model SS-115X, which utilises similar build and electronic design.

 This was a wonderful analogue system that provided ±15-dB cut and boost, whilst many modern graphic equalizers today have only ±10-dB capability, with digital signal processors (DSP) that totally ruin the sound. This analogue system utilises discrete components including the JRC4559D operational amplifier IC, works great!!!

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