Feliks Audio Envy Susvara Edition Headphone Amplifier with Susvara OG Headphones
Feliks Audio Envy Susvara Edition Headphone Amplifier with Susvara OG Headphones
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The Feliks Audio Envy Susvara Edition paired with HiFiMAN Susvara OG Headphones represents an ultimate-tier, end-game personal audio system. Handcrafted in Poland by Feliks Audio, the Envy Susvara Edition is a Class A, single-ended, transformer-coupled flagship tube amplifier engineered specifically to supply the high voltage swing, current delivery, and control demanded by ultra-low sensitivity planar magnetic headphones.
Building upon the acclaimed Envy architecture, the Susvara Edition introduces custom-made amorphous-core output transformers, a dedicated "Susvara" output impedance gain profile delivering up to 9W of Class A power, and premium internal components derived from Feliks Audio's flagship Anniversary Edition. Paired with the legendary nanometer-diaphragm HiFiMAN Susvara OG, this complete system delivers astounding resolution, fast dynamic response, deep low-end impact, and rich, organic 300B harmonic presentation.
Ordering Note: Specially built-to-order system. Please allow approximately 6 to 7 weeks for delivery.
KEY FEATURES & SYSTEM HIGHLIGHTS
- Complete Reference Headphone System: Includes the Feliks Audio Envy Susvara Edition tube amplifier paired directly with the original HiFiMAN Susvara OG planar magnetic headphones.
- Class A 300B Tube Circuitry: Single-ended, output transformer-coupled design utilizing matched premium Stradi S300B power triodes and PSVANE CV-181 Mk2 (6SN7) driver tubes.
- Up to 9W Class A Output Power: Features a newly tuned "Susvara" gain setting that increases output power to 9W, providing effortless dynamic headroom for ultra-demanding 83dB sensitivity loads.
- Custom Amorphous-Core Transformers: Ultra-low-noise output transformers with amorphous cores engineered for rapid transient response, superior linearity, and maximum micro-detail retrieval.
- Anniversary-Grade Internal Components: Wired with UPOCC single-crystal copper signal conductors and upgraded, microphonic-resistant coupling capacitors for pure signal transparency.
- HiFiMAN Susvara OG Planar Headphones: Features ultra-thin nanometer-grade diaphragms, Stealth Magnet design, and open-back Window Shade grilles for zero-reflection transparency.
- Preamplifier Capability & Flexible I/O: Includes balanced XLR and unbalanced RCA inputs alongside dedicated pre-out connections for integration into high-end 2-channel stereo setups.
SPECIFICATIONS
| Specification | Feliks Audio Envy Susvara Edition (Amplifier) | HiFiMAN Susvara OG (Headphones) |
|---|---|---|
| Architecture / Driver Type | Class A, Single-Ended, Transformer-Coupled Tube | Open-Back Planar Magnetic (Stealth Magnets) |
| Power Vacuum Tubes | 2x Stradi S300B Power Triodes | — |
| Driver Vacuum Tubes | 2x PSVANE CV-181 Mk2 / 6SN7 | — |
| Max Output Power | Up to 9 W Pure Class A (at "Susvara" gain setting) | — |
| Frequency Response | 7 Hz – 100 kHz (±3 dB) | 6 Hz – 75 kHz |
| Impedance / Sensitivity | Selectable Output Impedance (LO / MID / SUSVARA) | 60 Ω / 83 dB Sensitivity |
| Audio Inputs | 1x Stereo Pair Balanced XLR, 2x Stereo Pairs Unbalanced RCA | Dual 3.5mm Connectors on Earcups |
| Headphone Outputs | 1x 4-Pin Balanced XLR, 1x 6.35 mm (1/4") Jack | Detachable Cable Included |
| Pre-Out Voltage / Impedance | 5.0 V RMS Max Output / 600 Ω Output Impedance (XLR & RCA) | — |
| Internal Wiring & Core | UPOCC Single-Crystal Copper / Amorphous-Core Transformers | Nanometer Diaphragm |
| Power Consumption | 110 VA (230V / 115V AC options) | — |
| Dimensions & Weight | 350 x 330 x 185 mm (excl. tubes) | Weight: 15.1 kg | Weight: 450 g |
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