The Buzz Audio MA-2.2b is a masterclass in high-resolution, transformerless preamplifier design. Handcrafted in New Zealand by Tim Farrant, this two-channel 1U unit is engineered for absolute signal fidelity, lightning-fast transient capture, and three-dimensional spatial accuracy. By pairing a direct-coupled Class-A input stage with Buzz Audio’s proprietary BE40 discrete amplifier modules, the MA-2.2b delivers your source's pure acoustic truth without the phase smearing, transient lag, or low-end cloudiness associated with transformer-heavy designs.

What makes the MA-2.2b a standout in high-end recording environments is its astonishing frequency bandwidth—extending from $2\text{ Hz}$ up to $250\text{ kHz}$. This ultra-wide bandwidth guarantees near-zero phase shift across the audible human hearing range, resulting in sub-bass depth that remains tight and focused, alongside an effortless, unforced top-end air. Whether tracking intricate acoustic fingerpicking, dense drum overheads, grand piano, or orchestral ensembles, the MA-2.2b provides reference-grade clarity and dynamic headroom that allows micro-details to shine through effortless mix translation.

The Buzz Audio MA-2.2b is a top-tier choice for classical engineers, acoustic specialists, and modern producers who demand pristine signal capture. By combining Class-A transient speed, phase-accurate bandwidth, and precision stepped controls, it stands alongside the world's elite transparent preamplifiers as an essential tool for high-resolution tracking.

The Buzz Audio MA-2.2b is a handcrafted, two-channel high-end microphone preamplifier designed by Tim Farrant in New Zealand. Engineered for uncompromised resolution, wide dynamic range, and lightning-fast transient response, the MA-2.2b uses an ultra-clean, Class-A discrete transformerless circuit topology. It captures sound sources with absolute acoustic realism, depth, and spatial precision, avoiding the phase smearing and low-end saturation typical of transformer-based preamps.

At the heart of the MA-2.2b is Buzz Audio's proprietary BE40 high-speed discrete Class-A amplifier module. Operating with a wide bandwidth that extends well past $250\text{ kHz}$, this design preserves harmonic phase relationships and sub-bass stability. The "b" designation denotes the inclusion of high-quality internal output transformers (or optional transformerless output paths depending on configuration), combining ultra-low noise, high common-mode rejection, and massive output headroom with subtle analog weight. Featuring high-grade 41-detent stepped gain potentiometers, dedicated instrument DIs, and a minimalist signal path, the MA-2.2b serves as a reference front end for classical recording, drum overheads, acoustic tracking, and mastering-grade audio capture.

Key Features

• True Class-A Discrete Topology: Utilizes proprietary BE40 high-speed discrete amplifier modules running in pure Class-A to eliminate crossover distortion and maximize transient speed.

• Transformerless Input Stage: Ultra-low-noise, direct-coupled input topology eliminates input transformer phase distortion and frequency coloration for transparent acoustic capture.

• Wide Frequency Bandwidth: Extended linear response from $2\text{ Hz to } 250\text{ kHz}$ guarantees precise phase alignment across the entire audible spectrum and beyond.

• Precision Stepped Controls: High-quality 41-detent rotary potentiometers deliver repeatable gain adjustment and accurate channel matching across stereo pairs.

• High-Z Instrument Inputs: Front-panel direct inputs route direct electric bass, guitars, and synthesizers directly into the Class-A signal path.

• Mute & Polarity Functions: Onboard switches per channel include $+48\text{V}$ phantom power, phase reverse,$-20\text{ dB}$ pad, and dedicated output mute for safe cable swapping.

• Audiophile Construction: Built with heavy-gauge steel housing, anodized aluminum faceplate, high-grade audio capacitors, and an external low-noise toroidal power supply.