Feliks Audio

Poland9 products1 reviews

About Feliks Audio

Founded in 2014 in Lublin, Poland, Feliks Audio has established itself as one of the finest OTL (Output Transformerless) tube headphone amplifier manufacturers in the world. The company emerged from the Eastern European audiophile scene with a clear mission: build supremely musical tube headphone amps with hand-selected components and point-to-point wiring, at prices that make tube rolling accessible to enthusiasts who previously couldn't afford the entry ticket. Feliks Audio's sonic philosophy embraces the best qualities of OTL tube amplification: lush midrange bloom, expansive soundstaging, and a warmth that makes headphones like the Sennheiser HD800S and ZMF Auteur sing. Their OTL topology means the signal passes through the tubes without an output transformer, preserving the tube character with maximum transparency. The Euforia and Envy amplifiers have earned particular praise for their ability to extract emotional depth from recordings while maintaining surprising detail and clarity. The range spans the Echo (entry-level tube headphone amp), Elise (mid-range), Euforia (flagship OTL), and the Envy (their most ambitious design, a Class A hybrid). Each model supports tube rolling — swapping different vacuum tubes to voice the sound — which has become a beloved hobby within the Feliks community. The Envy, with its hybrid topology, offers the lowest output impedance in the range, making it compatible with a wider variety of headphones including lower-impedance planars. Feliks Audio matters because they democratised premium tube headphone amplification. Before Feliks, quality OTL tube amps for headphones meant spending $3,000+ USD. The Euforia delivers comparable musicality at a fraction of that price, handmade in Poland with genuine point-to-point wiring. The trade-off is that OTL topology works best with high-impedance headphones (300+ ohms), limiting pairing options, and build quality — while artisanal — can feel less polished than Japanese or German competitors.