Rupert Neve Designs Portico II Master Buss Converter

Whether you’re tracking, printing mixes or mastering, the Master Buss Converter is a revelation in quality and functionality of A-D conversion technology. The analog drive circuitry allows the MBC’s converter to be fed by either a class-A transformerless path for maximum transparency, or by custom interstage audio transformers with variable Silk for a wide variety of tonal enhancements. Coupled with an astonishingly musical limiter, the MBC is always the best choice to capture your analog signals with breathtakingly three-dimensional accuracy.

FEATURES

• SELECTABLE ANALOG DRIVE PATHS
• The very best of class-A transformer-less and custom transformer-coupled designs at the touch of a button.
• TRANSFORMER PATH WITH SILK / TEXTURE
• Add weight and punch with a dedicated custom inter-stage transformer before the converter. Silk / Texture allows you to dial in the harmonic content and drive saturation of this signal path.
• CLASS-A TRANSFORMER-LESS PATH
• Maximizes clarity and transparency of the input signal.
• COMPOUND ACTIVE RELEASE LIMITER
• Ultra-fast response, useful both for musical sculpting and transparent level control.
• SIDE CHAIN HPF
• Tighten the response of your limiting with a 12dB / Octave SC HPF sweepable from 20Hz to 250Hz.
• 24-BIT / 192kHz REFERENCE CONVERSION
• Unparalleled analog capture with precision clocking using top-of-the-line chips.
• MULTISTANDARD CONNECTIVITY
• Connect to any of your digital devices with AES, S/PDIF and TOSLINK all simultaneously available.
• PRECISION CLOCKING
• Maximum accuracy with minimal jitter and phase noise, able to operate as a master clock or sync from another master.

SPECIFICATIONS

• XLR LINE INPUT TO AES3 DIGITAL OUTPUT
• Limiter Bypassed
• zSource = 40 Ohm Balanced
• INPUT IMPEDANCE
• 9.9K Ohm
• COMMON MODE REJECTION
• @ 1 kHz 105 dB typical
• LATENCY SPECIFICATION
• (@ 1 kHz, Balanced Analog Input to AES3 Balanced Out)
• 44.1 kHz = 0.95 mS
• 48 kHz = 0.88 mS
• 88.2 kHz = 0.48 mS
• 96 kHz = 0.43 mS
• 176.4 kHz = 0.22 mS
• 192 kHz = 0.19 mS
• TRANSFORMER-LESS PATH
• FREQUENCY RESPONSE (20 Hz to 70 kHz)
• +/- 0.025 dB typical
• THD+N (10 Hz - 22 kHz BW)
• @ 1 kHz @ -2 dBFS: 0.0009% typical
• NOISE (10 Hz - 22 kHz BW)
• 10 Hz - 22 kHz BW.
• -108 dBFS typical
• TRANSFORMER PATH
• FREQUENCY RESPONSE (20 Hz to 70 kHz)
• +/- 0.1 dB typical
• THD+N (10 Hz - 22 kHz BW)
• @ 1 kHz @ -2 dBFS: 0.002% typical
• NOISE (10 Hz - 22 kHz BW)
• -114 dBFS typical
• LIMITER SPECIFICATIONS
• Transformer-less Path Selected, zSource = 40 Ohm Balanced
• FREQUENCY RESPONSE (20 Hz to 70 kHz)
• +/- 0.1 dB typical
• NOISE (10 Hz - 22 kHz BW)
• @ 0 dB Make-Up Gain: -107 dBFS typical
• @ +20 dB Make-Up Gain: -97 dBFS typical