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Feliks Audio Envy Susvara Edition – 9W Class-A 300B tube amplifier with amorphous transformers for the most demanding high-end headphones.
9-Watt Class-A 300B headphone amplifier with amorphous output transformers
The Envy Susvara Edition is the most powerful evolution of the acclaimed Envy platform. Delivering up to 9 watts of pure Class-A power, it was engineered for extremely demanding headphones such as the HIFIMAN Susvara.
Three gain settings (“Low”, “High”, “Susvara”) ensure optimal matching. The dedicated Susvara mode provides up to 12% more output compared to the original Performance version.
Custom-built amorphous-core output transformers ensure ultra-low noise, superior dynamics, and extended frequency response.
The amplifier comes equipped with carefully selected Stradi S300B power tubes and PsVane CV-181 Mk2 drivers, delivering precision, air, and exceptional technical resolution.
Signal-critical components from Jantzen, Vishay, Nichicon, and Dale, along with optimized internal wiring and improved interference management, elevate the Susvara Edition close to Anniversary Edition standards.
Handcrafted in Poland with a solid wood chassis (standard: Wenge), the Envy Susvara Edition represents uncompromising endgame engineering.
| Power Tubes | Stradi S300B |
| Driver Tubes | PsVane CV-181 Mk2 (6SN7) |
| Inputs | 2x RCA, 1x XLR |
| Outputs | 6.3 mm, 4-pin XLR, RCA & XLR pre-out |
| Maximum Output Power | 9 Watts |
| Frequency Response | 7 Hz – 100 kHz (±3 dB) 15 Hz – 43 kHz (±1 dB) |
| AC Voltage | 115 V or 230 V |
| Power Consumption | 110 VA |