Rupert Neve MBT (Master Bus Transformer)

AUDIO ANIMALS REVIEW

The Rupert Neve MBT is an exceptionally useful tool. The main feature for me on the MBT is the super silk. To have the ability to use silk blue and silk red at the same time with the added benefit of adjusting how much harmonic content is applied is invaluable.

KEY FEATURES

• Built around Rupert Neve’s Class-A, Transformer Coupled Signal Paths
• Revitalize mono or stereo tracks, stems and mixes with a suite of new controls
• Add that missing weight and power with our new Super Silk circuit
• Add dynamic character with the opto-based Color Comp
• Quickly adjust tone with the gentle and musical LF & HF shelves
• Use the newly designed Width section to create dimension without losing focus
• Drive and level-match the interstage transformers with the I/O amplifiers

DRIVE & CONTROL

The MBT incorporates Class-A input and output amplifiers to ensure optimal gain staging, interstage transformer operation, and precise level matching. Output amplifiers drive custom output transformers for line balancing and isolation.

EQUALIZER

The MBT features a variable high-pass filter (HPF) that spans from 100Hz to 15Hz, ideal for managing low frequencies in a mix. It also includes a new 2-band Shelf EQ section with adjustable LF and HF bands, providing +/- 9dB of gain control. The LF band shapes low-end weight and power, while the HF band adds shine and clarity. Experimentation with the interaction of these sections is encouraged.

COLOR COMP

The Color Comp introduces an optical compressor design that emphasizes non-linear distortion and character to enhance audio depth. You can set the compressor ratio from subtle 2:1 to dramatic 5:1. A variable high-pass sidechain filter and Blend control offer flexibility in shaping compression. The Color Comp introduces harmonic content even with minimal gain reduction, and its release time ranges from 100mS to 1.5S for varied compression effects. It also provides 20dB of Class-A makeup gain for further harmonic enhancement.

SUPER SILK

Super Silk takes the beloved Silk circuit to a new level. It includes independent Red, Blue, Harmonics, and Zener Drive controls. Silk Red emphasizes upper mid and high-frequency harmonics, while Silk Blue enhances low and low-mid frequency harmonics. The Harmonics control saturates the MBT`s custom interstage transformers, offering unique blends and balances. The Zener Drive introduces asymmetrical soft clipping for a more aggressive tonality.

WIDTH

The Width section enhances the stereo spread without losing low-end focus. It has an additive width control with a broader range and a variable high-pass filter (HPF) to adjust width content. Subtle high-frequency tapering prevents harshness in the widened soundstage.