Esoteric F-02 Reference Class A/B Stereo Integrated Amplifier

Integrated Amplifier F-02 Showcases Grandioso-Grade Musical Fidelity

Integrated Amplifier F-02 is the pinnacle of high-end audio integration, drawing directly from the flagship Esoteric Grandioso “X” Edition to deliver a level of sound quality previously reserved for reference-class separates. Designed to capture the essence of musical expression with breathtaking realism, this high-performance stereo amplifier stands as the most complete solution for audiophiles who demand sonic precision, immersive presence, and system flexibility—all from a single chassis.

By integrating a fully balanced dual mono preamplifier with a power amplifier section inspired by the Grandioso M1X, the Esoteric F-02 Integrated Amplifier creates an ultra-high-fidelity listening experience that preserves both the texture and energy of music across genres. This is an integrated amplifier engineered not as a compromise, but as a celebration of musical nuance, drive, and dynamics—suitable for flagship digital source pairings such as the Esoteric K and N Series.

Preamp Circuit in F-02 Offers Unrivalled Resolution and Control

Integrated Amplifier F-02 is equipped with a fully balanced dual mono preamp architecture directly descended from the Grandioso C1X. This symmetrical layout isolates the left and right audio channels to ensure immaculate channel separation, enhanced resolution, and superior soundstage depth.

At the heart of its volume control system lies the proprietary Ultra Fidelity Attenuator System, implemented via the advanced UFA-1792 stepped attenuator module. With 0.1dB resolution over 1,120 steps, users can fine-tune playback levels with surgical accuracy—minimising signal degradation and preserving tonal integrity at all volumes.

Three ES-Link Analog inputs allow high-speed current transmission using Esoteric’s proprietary method, enabling ultra-low impedance signal transfer between compatible components. This input architecture is ideal for pairing with Esoteric digital sources, ensuring fully native signal flow with minimal conversion loss.

Further enhancing flexibility, the preamplifier includes:

• Independent dual mono phonostage (MM/MC) with RCA input
  
• Balanced 3-band tone control per source
  
• Balanced 4-pin XLR and unbalanced 6.3mm headphone outputs
  
• Dedicated DC power connector compatible with the external PS-01F power supply
  

Such design elements reinforce the F-02 as the ultimate control centre for high-fidelity listening systems, offering premium analogue capabilities in a fully modern, integrated form.

Power Amplifier in F-02 Delivers Grandioso-Grade Dynamics

Integrated Amplifier F-02 is a powerhouse of current delivery, offering 120 WPC into 8 ohms and scaling effortlessly to 240 WPC into 4 ohms. Built on a simplified yet robust circuit platform inspired by the Grandioso M1X, the power amplifier section achieves extraordinary drive capability while preserving sonic delicacy.

The amplifier adopts a 3-parallel push-pull bipolar transistor layout, allowing excellent linearity and high-speed current response. A massive 940VA EI core transformer, mounted bare for optimal resonance control, forms the centrepiece of the dual monaural power supply system. Esoteric ensures independent power rectification and smoothing per channel—mirroring true monoblock design principles.

To handle demanding speaker loads and complex musical passages, the F-02 uses Grandioso-grade custom block capacitors—10,000μF x4 per channel—in parallel to ensure peak current supply under all load conditions. Signal transmission is executed via 105μm thick copper traces and ultra-thick OFC bus bars, eliminating bottlenecks and maintaining fidelity throughout the circuit path.

An internal damping factor of 500 provides commanding woofer control, essential for tight, controlled bass even in full-range systems. The entire signal path is tuned for minimal negative feedback and coil-less output, enabling transparent overtone reproduction and low-phase distortion—key hallmarks of Esoteric’s sound.

Mechanical Engineering in F-02 Achieves Vibration-Free Sonic Purity

Integrated Amplifier F-02 achieves remarkable mechanical quietness and thermal control through meticulous industrial design. The amplifier’s 32 kg chassis employs thick aluminium blocks for non-resonant rigidity, while the semi-floating top panel structure introduces subtle acoustic openness, reducing enclosure-born colouration.

The internal heat management system features proprietary wave-shaped heatsinks that suppress peak resonances, enabling faster thermal equilibrium and consistent transistor bias stability. This precision ensures the F-02 maintains peak operating performance from the moment it’s powered on.

Vibration control is further enhanced by Esoteric’s patented integrated isolation feet. By combining spike and saucer mechanics, these decouplers remove unwanted mechanical stress from the enclosure, isolating delicate analogue circuitry from external resonance.

Such mechanical refinement complements the sonic purity of the amplifier, establishing the F-02 as a truly reference-level component in both build and performance.

System Expandability in F-02 Enables Custom High-End Configurations

Integrated Amplifier F-02 offers modularity and future-readiness through thoughtful connectivity and upgrade pathways. Audiophiles can elevate system resolution by introducing the PS-01F external power supply, improving preamplifier stability and performance. Likewise, the inclusion of XLR and ES-Link Analog pre-outs allows seamless integration with the Esoteric S-05 Class A power amplifier, supporting bi-amping or multi-amp configurations.

The amplifier also includes a modular slot for optional expansion boards, supporting legacy OP-DAC1 and OP-ESLA1 modules, ensuring backward compatibility while offering potential for future digital upgrades.

Other system-focused features include:

• Independently adjustable input gains (±18dB in 0.1dB steps)
  
• L/R channel balance calibration
  
• AV Through output for home cinema integration
  
• RS-232C and 12V trigger support for automation
  
• Programmable source naming and display management functions
  

The RC-1339 aluminium remote control operates not only the F-02 but also Esoteric SACD and network players, reinforcing system synergy within the Esoteric ecosystem.

F-02 Embodies the Concept of Separate-Class Integration

Integrated Amplifier F-02 redefines what a single-chassis amplifier can deliver by uniting reference-level preamplification and power amplification into a cohesive design. Built with the same architectural vision as Esoteric’s Grandioso separates, the F-02 doesn’t merely match performance expectations—it elevates them.

With sound shaped by subtractive aesthetics, minimalist circuit topology, and monumental power supply engineering, the F-02 Integrated Amplifier allows listeners to experience music with the dimensionality, drive, and harmonic accuracy of a fully discrete system. This is not just the finest integrated amplifier from Esoteric—it’s the one audiophiles have been waiting for.