UREI LA-12
A dual-channel unit from the LA Series. It is the two-channel sibling of the LA-10, and it fits in a single rack space.
Overview
The LA-12 is the dual-channel member of UREI's LA Series compressor/limiters. It sits between the single-channel LA-10 and the feature-laden LA-22. According to UREI's own literature, the three models "share virtually identical performance characteristics and differ only in terms of number of channels and features". So if you need two channels of the same level control and don't want to pay for the LA-22's parametric filter and expander section, the LA-12 is the practical choice.
The design uses three separate gain reduction circuits: Peak, Average, and Peak Output Ceiling limiting. The engineer chooses whether the unit responds to fast transients, to the overall average level, or to a hard output ceiling, instead of being stuck with a single detector behavior. Front-panel controls are Threshold, Detector mode, Attack, Release, Ratio, and Output Level. Collectors and engineers consistently mention one detail. Turn the Ratio control fully counter-clockwise and it engages an "Auto" function that sets the compression ratio and the Peak/Average balance to factory-preset values. It's a quick setup when you don't want to dial in every parameter by hand.
The LA Series is built around what UREI called Smart-Slope compression ratios, paired with ultra-low-noise circuitry. Two high-visibility LED displays handle input/output level and gain reduction metering. The whole thing lives in a compact 1U rack chassis, so two channels of dynamics processing take up a single rack space.
UREI positioned the LA Series for "the most demanding applications," naming recording, broadcast, installed sound, and sound reinforcement as the target uses. That's marketing copy. Mix (July 1992, p.89) ran UREI's own advertising noting that after more than twenty years the company's compressor/limiters remained the choice of audio professionals, and that it was difficult to find a recording or broadcast studio that didn't own at least one. That's an advertisement talking, so read it as positioning. The same claim shows up across the LA Series launch material in Sound & Communication (1992, p.130).
Per UREI's own comparison, the LA-12 is not the elaborate model. For "more elaborate and detailed control," the literature points buyers to the LA-22. It adds an expander and a parametric EQ filter system for custom-tuning the frequencies that trigger gain reduction and expansion. The LA-10 and LA-12 are described as "perfect for most basic level control applications". That undersells a unit with three detector circuits and full front-panel control, but it shows where the LA-12 sits in the lineup. Buyers who wanted the extra tone-shaping went up the line. Buyers who wanted two clean channels of compression and limiting stopped here.
Original list pricing put the LA-12 at $895 in one distributor listing, with a second listing showing $850. That's the kind of small spread you'd expect between catalog printings, so treat the figure as approximately $850 - $895 depending on the source. The same listings put the LA-10 at $550 - $595 and the LA-22 at $1,150 - $1,195.
The LA-12 turns up in real studio inventories, not just brochures. A 1990s Electronic Musician studio profile lists a UREI LA-12 alongside an 1176LN in the signal-processor rack of a working project studio. An EQ magazine facility write-up describes specifying JBL/UREI LA-12s for premastering and vocal tracking work.
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