Pope Audio BAX 2020 with Transformer Option SEPIA Module

The Pope Audio BAX2020 Sepia Module with Transformer is a mono discrete analogue Baxandall equaliser operating on ±15 V rails, built around a 2520-style discrete operational amplifier and a transformer-balanced output stage, delivering phase-accurate tonal shaping, extended headroom and controllable harmonic coloration for professional recording and mastering signal chains.

Classic Baxandall Architecture with Modern Discrete Gain

The BAX2020 applies the original Baxandall shelving topology to a modern discrete amplifier circuit. The 2520-format discrete op-amp provides superior slew rate, transient definition and voltage swing compared to integrated amplifier designs. The equaliser preserves phase integrity across the full frequency range, allowing large tonal movements without smearing, making it suitable for both corrective shaping and creative enhancement.

Transformer Output with Harmonic Density

The transformer-balanced output introduces controlled magnetic saturation when driven, enhancing low-frequency mass, smoothing transient peaks and increasing perceived density. The output stage supports transparent operation for clean processing and coloured operation for character-based work, giving the module a wide tonal operating range without sacrificing clarity.

Musical Wide-Curve Shelving Equalisation

The Baxandall shelving curves deliver broad, natural-sounding boost and cut behaviour that reshapes the full spectrum musically rather than surgically. The low-frequency shelf tightens sub-bass and reinforces body, while the high-frequency shelf restores air, openness and definition without brittle artefacts. Interaction between shelves produces cohesive tonal movement ideal for stems, buses and full programme material.

High-Headroom Discrete Signal Path

The discrete amplifier stage maintains wide dynamic range and low noise even at elevated signal levels. When driven deliberately, the amplifier and transformer generate smooth saturation that adds analogue weight, depth and cohesion. This allows the BAX2020 to function both as a transparent equaliser and as a tone-shaping harmonic enhancer.

Mono Analogue Rack Integration

The mono configuration suits tracking chains while The ±15 V rail operation ensures stable headroom, consistent transient response and reliable analogue performance across demanding professional environments.

Why Choose Pope Audio BAX2020 Sepia Module with Transformer

• Adds natural analogue depth to modern digital productions

• Shapes bass and treble in wide, musical strokes

• Enhances perceived loudness without aggressive limiting

• Delivers both transparent correction and character processing

• Integrates easily into professional analogue rack systems

• Mono Baxandall equaliser for Karno Sepia
• 2520-style discrete operational amplifier
• Transformer-balanced output stage
• ±15 V DC rail operation
• Phase-accurate shelving EQ topology
• Low-frequency shelving control
• High-frequency shelving control
• Discrete analogue gain staging
• High headroom signal path
• Controlled harmonic saturation
• Analogue drive capability
• Broad musical equalisation curves

This item, like everything we supply, comes with the complete support of our expert team. Our excellent technicians have been specifying, building and supporting studios for over twenty years. If you have any problems with installation, setup or everyday use, they’re never more than a click away, and always happy to help.

You can contact them here.