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Seller's Description

This is one of the best headphone amps on the planet. I have the original shipping box.Comes with original stock 300b full music tube and Linlai 6sn7 upgraded tube.

Our Thoughts RADAR AI

This A$7,500 asking price is a strong bargain, sitting well below the 25th percentile (A$8,283) of recent Australian listings and nearly A$1,600 under the median (A$9,093). Given that the Envy’s new retail price typically converts to roughly A$10,500–A$11,000, this used unit offers immediate, significant value for a serious buyer.

The Envy is Feliks Audio’s reference 8W Class A tube amplifier built around legendary 300B power tubes, delivering enough current to drive even demanding headphones like the Susvara with authority and dynamic punch. Its user-selectable impedance matching and automatic bias circuit make it both versatile and hassle-free to operate. At this price, it represents a rare opportunity to acquire a high-end flagship that usually commands near-new pricing, assuming the unknown condition is verified as clean and functional.

Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.

About Feliks-Audio

Feliks Audio traces its roots to Poland, where electronics engineer and audio enthusiast Henryk Feliks began designing amplifiers over 40 years ago as a passionate hobby. Around 20 years ago, he turned this pursuit commercial, selling custom-made units initially within Poland. In 2014, the second generation—sons Łukasz, Piotr, and Michał—joined the family business, elevating it into a global operation based in Lubliniec. Today, this tight-knit team of about 10 crafts products with over 25 years of accumulated expertise in tube amplification.

The brand specializes exclusively in handcrafted tube amplifiers, with a sharp focus on headphone applications. Their lineup includes output transformerless (OTL) designs like the accessible Echo, high-end models such as the Envy Susvara Edition, and even esoteric electrostatic amplifiers like the Bliss, which supports both modern and vintage headphones. Every piece is in-house engineered, tuned, and assembled, blending natural materials and unique topologies for purist performance, often doubling as preamps for active speakers.

Feliks Audio occupies a niche boutique position in the high-end hi-fi market, revered by headphone aficionados for its emotional, rewarding sonics that prioritize musicality over sterile precision. Distributed in over 20 countries through select channels, their four-figure pricing reflects premium, small-batch quality rather than mass-market volume, appealing to discerning buyers who value tradition-meets-innovation in tube-driven headphone amplification.

See all Feliks-Audio listings on RADAR.

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