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Gem Audio Labs Preceptor Model-A
The Preceptor model-A (Aggressive) is a two-channel, class-A compressor/limiter. Gain reduction is handled by a discrete VCA design based on Zener diodes and bipolar transistors. There are 16 preciesly matched Zener diodes on board! The Gem Audio Labs Preceptor Model-A compressor/limiter looks right out of the early '70s. Its stepped knobs dole out satisfying clickage and its dual VU meters bathe your console in a warm yellow glow. Hand-built using premium parts, the Preceptor juices whatever you send its way with warmth and sheer size. if you were looking to add aggressiveness and color to your final 2-Mix. If you’re looking for a versatile, great-sounding compressor/limiter, give Gem Lab Audio’s Preceptor Model-A a try.
Inputs: Balanced XLR
Outputs: Balanced XLR
Ext. sidechain inputs: Balanced TRS
Signal transformers: Carnhill
Bypass: hard relay bypass
Input impedance: 2k5Ω or 10kΩ switched on the front panel
Output impedance: 50Ω
Frequency response: 20-22.000Hz
Maximum input level : + 21 dBu @ sensitivity +4 dBu
Maximum output level: +23 dBu
S/N ratio (A-weighted) : better than 85dBu
Meter: 0 to -20dB gain reduction
Signal path: Class-A, discrete
VCA: bipolar transistors biased by Zener diodes
Dynamic modes: Compressor, Limiter (Fairchild 660)
Speed modes: fast, medium, slow
Attack: 0,5ms – 60ms
Release: 25ms – 6s
External sidechain: YES
Sidechain filtering : OFF, 40Hz, 80 Hz, 120 Hz, 200 Hz, 320 Hz
Blender (parallel compression) : yes
Fuses type: 230V : 630mA (slo-blo; 5x20mm) /115V :1,25A (slo-blo; 5x20mm)
Power consumption: 70W
Dimensions (WxHxD) : 483x133mm (3U) x 245mm
Subject to change without notice.
Difference between Preceptor Model-A and Model-T
The Model-A has a “Speed” switch that affects Attack and Release times. On the Model-T, the switch affects Attack only (and is labelled as such).
The Model-T sports an additional switch (not present on the Model-A): “Action,” which lets you choose between two modes – each giving you a different combination of threshold and compression knee. “Soft” gives you less pump factor and is useful for for complex material – mastering, for instance. “Hard” allows for more agressive pumping and is great for tracking, when you occasionally want access to stronger compression.
The Model-T’s “Soft” setting is optimized for complex material that requires a more finessed touch, such as film scoring or classical music recording and mastering. In case your were wondering, the “T,” in Model-T designates “Transparent.” The Model-A (“Agressive”), lacking this switch, exhibits the “Hard” compression characteristic, and is great for more agressive material such as rock and pop recording and mastering.
DIFFERENCE BETWEEN PRECEPTROR MODEL-A AND MODEL-T