MusicRadar

• Review

The Preceptor is unusually tall (3U) for a two-channel solid-state device, and though this extra headroom helps to accommodate the large power transformer, its most immediate benefit is in the front-panel design, which offers plenty of tweaking room.

The backlit VU meters not only show the gain reduction but they also indicate the bypass state, changing to an orange glow when active.

As a 'boutique' product, this is a hand-assembled unit utilising no-expense spared components throughout: 21-position gold contact stepped attenuators, hand-matched Zener diodes and transistors, Carnhill input transformers, WIMA capacitors, and so on.

"The more time we've spent with this unit, the more we've come to appreciate it across the board."

There are no continuous controls and so all settings can be recalled exactly, which makes the unit a candidate for mastering applications as well as tracking and mixing.

Generic Audio states that differences between the two channels are kept to a maximum of +/-0.1dB, which is no mean feat.

GA hasn't skimped on the power supply either, using a bespoke AC transformer (preceded by an EMI filter) to supply five separate voltages for the various circuit blocks, each of which is stabilised to within +/-0.01V.

This is crosses the borderline of obsessive, which in this context is rarely a bad thing.

The XLR inputs and outputs at the rear are accompanied by two TRS sockets for sidechain input. The sidechain selection toggle sits next to the bypass and input Z (impedance) switches at the top of each channel with two more toggle switches flanking each VU meter controlling compression/limiting behaviour and overall attack/release speed (F, M, S).

Stepped

Below the input and output controls are four more stepped rotary switches: HPF, attack, release and blend. The former engages the sidechain high-pass filter (internal and external) with five cutoff frequencies (40, 80, 120, 200 and 320Hz).

The attack and release controls provide 11 steps with automatic options at the end of the dial. The 11-position Blend knob mixes compressed and uncompressed signals in 10% steps.

Unlike many designs that use one channel as 'master' in linked stereo mode, the Preceptor only links the sidechain input (i.e. sums the two channels) allowing completely independent channel settings. This is a far preferable approach in our opinion, allowing for much more scope in tracking, mixing and mastering.

As the Preceptor does not feature a Threshold control, the input knob effectively dials in the compression/limiting click by click.

With relatively hot signals, the gain reduction meter starts dipping at the lowest input gain setting (first click up) and means you are straight into compression, though it is very subtle.

As a secondary aid to initial gain staging the input-Z switch can effectively pad back by 12dB using the

1200 tap from the transformer instead of 300. The output gain provides plenty of compensation for brutal gain reduction and with seemingly untouchable headroom.

Many devices boast higher maximum I/O figures and yet are easier to distort, so if you're a dBu spec hound don't be fooled: this is one roomy compressor.