Feliks Audio EOS Hybrid Headphone Amplifier & Speaker Amplifier

The Feliks Audio EOS represents an exciting new chapter for the Polish valve amplification specialist, bringing together reference-level headphone performance, exceptional craftsmanship and the ability to power suitably matched loudspeakers from a single extraordinary amplifier.

Unveiled at High End Vienna 2026, EOS has been conceived as Feliks Audio's new reference amplifier for dynamic and planar-magnetic headphones, taking the company's experience with models such as the acclaimed Envy and pushing the concept considerably further.

Where the flagship Feliks Audio Bliss is dedicated specifically to electrostatic headphones, EOS has been developed for listeners using conventional dynamic and planar designs – including some of the most demanding headphones available today.

A New Reference for Dynamic & Planar Headphones

Feliks Audio has earned an enviable reputation for combining the natural musicality of valve amplification with the control, transparency and low noise required by modern reference headphones.

EOS builds on that philosophy with a substantially more ambitious hybrid amplifier architecture, designed to deliver the effortless power and authority required by today's finest planar-magnetic and dynamic headphones.

Its first public demonstrations included notoriously demanding designs such as the HiFiMAN Susvara, with early listening impressions highlighting EOS's sense of ease, openness, clarity and expansive three-dimensional presentation.

Rather than simply creating another version of Envy, Feliks Audio has used EOS to explore what is possible when the same fundamental philosophy is taken to an altogether greater scale.

The Feliks Audio Sound – Without the Limitations

One of the reasons Feliks Audio has developed such a loyal following is the company's ability to create valve amplifiers that sound wonderfully natural without becoming overly warm, soft or coloured.

EOS continues that approach.

Expect an exceptionally open and spacious presentation, beautifully rendered vocals and instruments, natural tonal richness and the effortless sense of flow associated with the finest valve designs.

At the same time, its hybrid architecture has been developed to provide the speed, grip and dynamic authority required by today's most demanding headphones.

The objective is not simply to create a powerful headphone amplifier, but one capable of combining scale, refinement, transparency and emotional involvement at the highest level.

Headphones and Loudspeakers From One Amplifier

One of the most significant developments with EOS is the inclusion of loudspeaker outputs.

This allows EOS to move beyond the traditional role of a dedicated headphone amplifier and become the centrepiece of a highly specialised two-channel system.

For listeners using appropriately matched loudspeakers – particularly more efficient designs – EOS offers the intriguing possibility of enjoying the same amplifier with both a reference headphone system and a conventional loudspeaker setup.

It gives EOS a level of versatility rarely found amongst ultra-high-end headphone amplifiers.

Designed to Make a Statement

EOS also introduces a dramatically different visual direction for Feliks Audio.

The substantial chassis combines sculpted forms, precision metalwork and beautifully finished natural wood, while the exposed valves remain an integral part of the amplifier's appearance.

A vertically mounted central control section and integrated display bring a distinctly contemporary feel to the design, contrasting beautifully with the traditional valve technology surrounding it.

It is unmistakably a Feliks Audio product, but one conceived on an altogether more ambitious scale.

Handcrafted in Poland

Feliks Audio has been designing and manufacturing valve amplifiers for more than 25 years, with its products engineered, tuned and assembled in-house in Poland.

That same emphasis on craftsmanship runs throughout EOS.

From the selection of components and transformers to the woodworking, mechanical construction and final testing, EOS has been designed as a genuine high-end product rather than a mass-produced piece of electronics.

It is an amplifier intended not only to perform at an exceptional level, but to become a centrepiece of the system around it.

EOS, Envy and Bliss

EOS occupies an important new position within the Feliks Audio range.

The Bliss remains Feliks Audio's ultimate dedicated solution for electrostatic headphones, while EOS is aimed at listeners using dynamic and planar-magnetic headphones.

Within that category, EOS sits above the Envy family as Feliks Audio's most ambitious amplifier yet for demanding conventional headphones, while adding loudspeaker capability that further separates it from the existing range.

For owners of headphones such as HiFiMAN Susvara and other reference planar designs, EOS represents a fascinating new proposition: a Feliks Audio amplifier built without the usual constraints of a conventional headphone amplifier.

Key Features

• Reference-level Feliks Audio hybrid amplifier

• Designed for dynamic and planar-magnetic headphones

• Developed to drive demanding flagship headphone designs

• 300B valve-based architecture

• Dedicated headphone amplification

• Integrated loudspeaker outputs

• Suitable for use at the heart of headphone and two-channel systems

• Contemporary integrated display and control interface

• Premium natural wood and precision metal construction

• Handcrafted in Poland

• Positioned above the Envy family for dynamic and planar headphone applications

• Unveiled at High End Vienna 2026

Feliks Audio EOS combines the character and musicality that have made the company famous with greater scale, versatility and ambition – creating a new reference for those seeking the very best from dynamic and planar-magnetic headphones.