Advent model 101
Noise Reduction Unit (1971)
The Advent Model 101 makes the considerable benefits of the Dolby Audio Noise Reduction System available to anyone who owns a good tape recorder.
By significantly reducing the normal proportion of background noise in a recording at any speed, the Dolby System yields a better overall signal to noise ratio and a quieter background level (virtually non existent noise in many cases) than previously possible.
Noise reduction makes lower tape speeds (3-3/4 and 1-7/8) usable for the first time for high quality music recording.
Input sensitivity: 30mV
Output level: 580mV
Noise reduction system: dolby
S/N improvement: 10dB (dolby)
Total harmonic distortion: 0.4%
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