About this collection
Feliks Audio is a family-run tube amplifier maker based in Lubliniec, Poland, with roots that go back to one engineer's fascination with valve circuits long before it became a commercial venture. What started as a small custom-build operation grew, with a second generation of the family joining the business, into one of the most respected names in headphone tube amplification, still designing, tuning, and hand-assembling every unit at their own facility rather than outsourcing production.
This isn't a category for casual listeners. Tube amplifiers, and OTL (output transformerless) designs in particular, are a different way of driving headphones: instead of chasing flat, clinical accuracy, they add warmth, texture, and a kind of harmonic richness that makes music feel alive rather than measured. It's a sound signature that headphone enthusiasts either fall in love with immediately or don't quite get, and Feliks has built its whole identity around doing that specific thing extremely well.
The lineup runs from the Echo, an accessible OTL amp that's a genuine entry point into tube sound, through the Elise and the award-winning Euforia, up to the Envy, their flagship and one of the most respected high-end headphone tube amps on the market, available even in a Susvara-tuned edition. For listeners who want to go further still, the Bliss electrostatic amplifier opens the door to an entirely different, and even more niche, category of headphone driving.
What sets Feliks apart in this space is value. At every tier, you're getting a genuinely hand-built unit that is engineered, tuned, and assembled in-house by a small team that has spent decades with tube circuits, not scaled or outsourced to hit a price point.