Mixthesizer ISOX

The FCPro Mixthesizer ISOX Stereo Analogue Isolator is a fully analogue, dual mono 3-band active EQ isolator featuring independent left and right signal paths, balanced XLR and unbalanced RCA connectivity, and a ±15 V power supply for high-headroom, precision stereo processing in professional audio environments.

Design and Architecture

The ISOX employs a true dual mono architecture that processes the left and right channels through completely independent signal paths from input to output. This structure preserves stereo imaging with precision, maintains phase coherence, and allows engineers to shape each side of the stereo field with accuracy. The design supports critical mixing and performance applications where spatial integrity and channel separation define the final result.

Active 3-Band Equalisation

The unit integrates an active three-band EQ consisting of low, mid, and high frequency controls. Each band responds with musical precision, enabling both corrective adjustments and creative tonal shaping. The active circuitry ensures consistent gain staging across the spectrum, allowing subtle refinement or more pronounced frequency enhancement without compromising signal integrity.

Analogue Signal Path

The ISOX maintains a fully analogue signal path to deliver natural tonal balance and immediate response. This approach avoids digital artefacts and preserves harmonic detail, resulting in clarity and depth even under demanding signal conditions. The circuit design supports high-energy material while retaining smoothness and definition across all frequency ranges.

Connectivity and Integration

The unit supports both balanced XLR and unbalanced RCA connections, enabling flexible integration into studio and live setups. The inclusion of an earth lift switch reduces ground loop issues and ensures stable operation across varied environments. This connectivity approach allows seamless compatibility with professional and semi-professional audio systems.

Build and Materials

The ISOX combines robust engineering with refined construction. The aluminium front panel provides durability and shielding, while handcrafted wooden side panels add structural integrity and aesthetic appeal. Solid metal knobs offer precise tactile control, ensuring reliable operation during both studio use and live performance scenarios.

Power and Performance

The ±15 V power supply delivers ample headroom for dynamic signals, supporting clean processing without distortion. This configuration ensures stable operation under load and contributes to the unit’s consistent sonic performance across different applications.

Why Choose Mixthesizer ISOX

• Provides precise stereo control with true dual mono processing for accurate imaging
• Enables intuitive sound shaping with responsive and musical EQ behaviour
• Maintains analogue warmth and clarity without introducing digital artefacts
• Integrates easily into diverse setups with flexible connectivity options
• Ensures reliable performance through high-quality construction and components
• Handles demanding signals with high headroom and stable power delivery

• Fully analogue 3-band active isolator
• Dual mono architecture with independent left and right channels
• Low, mid, and high frequency control bands
• High-headroom ±15 V power supply
• Balanced XLR inputs and outputs
• Unbalanced RCA connectivity
• Earth lift switch for ground loop reduction
• Aluminium front panel construction
• Handcrafted wooden side panels
• Solid metal control knobs
• Designed for studio and live performance use
• Preserves stereo imaging and phase accuracy

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.