Orban 672-A (1979)
The Orban 672-A is a professional single-channel parametric equalizer introduced in 1979. Not much is documented about it. What survives is the announcement advertising and one brief contemporary mention, but that is enough to show what it was and what it was for.
Orban's own announcement ran as an advertisement in DB Magazine (March 1979, p.21) and Recording Engineer (February 1979, p.45). It described the 672-A as "8 bands + tunable filters + electronic crossover" for $499. In practice, it was a fully professional eight-band, single-channel parametric equalizer with extra tunable high-pass and low-pass filters. The filters shaped response at the extremes of the spectrum. A split output let them work as a complete electronic crossover, cascaded ahead of the eight-band parametric section. The ad claimed the price involved no quality compromises and noted a balanced input.
A contemporary review in Modern Recording (November 1979, p.75) put it in the same position. For simpler jobs, a three-band parametric or a ten-band graphic might be plenty. For the genuinely tough situations common in PA and sound-reinforcement work, the 672-A was a sensible choice, especially considering its price.
Beyond those period sources, little is documented. There is no verified record of how long the 672-A stayed in production, how it fit into Orban's broader line, or detailed specs such as frequency response, dimensions, or weight.
Known specs from the announcement:
- Single-channel, eight-band parametric equalizer
- Additional tunable high-pass and low-pass filters
- Split output for use as an electronic crossover
- Balanced input
- Introductory price: $499 (1979)
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