Advent APX-7000 (1994)
Little is documented about the Advent APX-7000. Here is what the record shows. It was a signal processor that combined BBE harmonic restoration with a 12-band equalizer - five bands controlled from the front panel and seven from the rear. Audio (May 1994, p.28) noted that its filters were 18 dB/octave, with a 90 Hz high-pass and low-pass, and selectable subsonic filtering at 80 or 120 Hz. The unit offered a choice of amber or green illumination.
Beyond that brief magazine listing, documentation on the APX-7000 is thin. No further specifications, pricing, or production details have been located. It appears to have been Advent's entry into the late-era signal-processing market, alongside more familiar names in equalizers and BBE processors.
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