Roger Mayer 456HD-500 X

The Roger Mayer 456HD-500X is a 500-series solid-state tape emulation processor that combines a discrete Class-A, ultra-high-speed analogue design with custom transformer-balanced inputs and outputs to replicate the harmonic and dynamic behaviour of Ampex 456 tape running on a Studer A80. It brings warmth, depth and presence associated with high-definition tape recording directly into modern DAW environments with zero latency and no tape hiss.

Design and Build

Roger Mayer designed the 456HD-500X with a focus on absolute audio fidelity. The fully discrete Class-A analogue path uses only low-noise transistors, precision 1% metal film resistors and metallised film capacitors. The unit is hand-built in the UK to ensure robust performance and studio-grade quality.

Transformer Technology

At the core of the unit are custom hand-wound ferrite wideband transformers that provide transformer-balanced input and output. Unlike electronically balanced circuits that often introduce level inconsistencies, these transformers ensure tonal transparency and maintain signal integrity across the entire chain. This design allows the 456HD-500X to integrate seamlessly into DAW hardware inserts without compromise.

Performance

The processor delivers a wide dynamic range of 108dB and can handle maximum input levels up to +32dBm while maintaining an internal headroom of 20dB. With transformer-balanced outputs capable of delivering +4dBu at 3.5V peak, the unit provides clarity and headroom required in demanding professional studio applications.

Specifications

• Input Level: Nominal -20dB to +4dB, Transformer Balanced

• Input Impedance: 10kΩ or greater

• Output Level: +4dBu / 3.5V peak, Transformer Balanced

• Output Impedance: 50Ω

• Dynamic Range: 108dB

• Headroom: Maximum input level +32dBm, internal hedroom 20dB

• Dimensions: 38.1mm (W) x 185mm (D) x 44mm (H)

• Weight: 700g

• Power Requirements: +16.2V DC @ 125mA regulated