Tap into premium A-D conversion and limiting for tracking, mixing, and mastering in any genre with the Rupert Neve Designs Portico II MBC Master Buss Converter, a dual-path 24-bit / 192 kHz converter with a host of high-end configurable features ranging from adjustable harmonics to selectable calibration levels.
Capable of operating in dual mono or linked stereo, the MBC provides the flexibility and customization needed to handle critical stereo mixes, vocal session with A-list artists, and anything in between. Select the Class-A tranformerless path for transparency or switch to the custom transformer-coupled path to access the Silk/Texture circuit for adjustable harmonic content and saturation.
The onboard limiter utilizes enhanced topology to deliver a balance of exactitude and vibe, and its threshold, gain, and release controls offer efficient manipulation of crucial settings. A 20 to 250 Hz sweepable high-pass filter can be inserted into the sidechain, allowing effective management of how your signal's bass levels trigger the limiter.
With XLR-1/4" combo inputs, three simultaneously active digital outputs, and BNC word clock I/O, the MBC is easily integrated into any setup, be it a live sound rig or a permanent studio installation.
Dual-Path Analog Design
Unlike Rupert Neve's audio transformers intended for line-level output, this new transformer is designed to achieve output transformer harmonic content characteristics at a level appropriate for input to the converter itself. With the addition of variable Silk, the engineer is able to precisely dial in the desired amount of harmonic content; the Red mode highlights harmonics in the mid and high frequencies, while the Blue mode accentuates harmonics in the lows.
From a subtle transformer tonality without Silk, to significantly more color than vintage modules with the Silk/Texture circuit fully pushed, the selectable transformer path fills your tracks with enhanced dimensionality and power. When maximum transparency and fidelity is desired, the transformerless path provides extraordinary detail and clarity.
While many transformerless circuits suffer from thin tonal balance and a lack of punch, the MBC's Class-A circuitry was painstakingly designed to deliver a beautiful sense of clarity, with vibrant detail at both high and low frequencies. As an additional tonal palette to capture your tracks, the transformerless path is an essential complement to the weighty, classic sound of the transformer path. No matter what sonic character you're seeking, the MBC can provide it at the push of a button.
Compound Active Release Analog Limiter
To further adapt the sound of the limiter, several controls are available for each channel. The built-in S/C HPF (sidechain high-pass filter), sweepable from 20 to 250 Hz, minimizes the limiter's reaction to low frequencies, which tend to be more sustained in nature than high frequencies. The threshold control sets the maximum levels for your digital signal, and the variable release time constant alters the response characteristic to better fit different source material.
The MBC can be seamlessly integrated into a multichannel conversion environment, thanks to its four selectable standard levels from -14 to -20 dBFS. These reference level calibration standards are implemented with a superb degree of accuracy via high-precision resistors and relay-controlled stepped attenuation.
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