{"product_id":"feliks-audio-envy-performance-edition-flagship-tube-headphone-amplifier-open-box","title":"Feliks Audio Envy (Performance Edition) Flagship Tube Headphone Amplifier (Open Box)","description":"\u003ch2\u003eClass A Single-ended transformer coupled, balanced amplifier, powered by the legendary 300B tubes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance Edition includes :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFull Music 300B power tubes\u003c\/li\u003e\n\u003cli\u003eUPOCC (single crystal copper) signal wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"Feliks Audio Envy Top View\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/Feliks-audio-envy-page_2048x2048.png?v=1708124794\"\u003e\u003c\/p\u003e\n\u003ch3\u003eENVY HEADPHONE AMPLIFIER\u003c\/h3\u003e\n\u003cp\u003eThe Envy amplifier is a Single Ended class A headphone tube amplifier, built around the\u003cbr\u003efamous 300B tubes, with transformer coupled output, designed to handle any kind of planar magnetic or dynamic headphones with an impedance range between 16 to 600 Ohm.\u003c\/p\u003e\n\u003cp\u003eThe amplifier is built on a solid metal chassis and finished with a natural high-quality oiled\u003cbr\u003ewood. On the front panel present are headphone outputs: balanced in XLR format and\u003cbr\u003eunbalanced in 6.3mm format. Other selectors include touch-sensitive stand-by button,\u003cbr\u003evolume control knob, impedance selector and audio source selector.\u003c\/p\u003e\n\u003cp\u003eThe audio source selectors allows choices of one of the three options: unbalanced RCA\u003cbr\u003esource (IN1 or IN2) and balanced XLR (IN3, left and right channels).\u003c\/p\u003e\n\u003cp\u003eThe touch sensitive stand-by button has a LED indicator. For a full \"power off\" of the\u003cbr\u003eamplifier please use the physical switch on the rear panel of the amplifier, near the AC\u003cbr\u003econnector.\u003c\/p\u003e\n\u003cp\u003eEnvy can work as pre-amplifier with a high level of maximum output (up to 10V RMS). On the rear panel there is a pair of RCA pre-amplifier outputs as well as two XLR connectors for balanced pre-amplifier output. Output voltage level is regulated with the volume knob.\u003c\/p\u003e\n\u003ch3\u003eGAIN SELECTION\u003c\/h3\u003e\n\u003cp\u003eEnvy supports all ranges of planar magnetic and dynamic headphones, using the GAIN\u003cbr\u003eselector on the front panel for the best match. There are 3 settings, that regulate the output gain (i.e. limiting the maximum output voltage):\u003c\/p\u003e\n\u003cp\u003e1) Low (gain)- recommended for dynamic headphones with impedance from 16 to 60Ohm\u003c\/p\u003e\n\u003cp\u003e2) Mid (gain)- recommended for headphones with impedance from 60 to 300 Ohm, including most planar magnetic headphones\u003c\/p\u003e\n\u003cp\u003e3) Hi (gain)- recommended for demanding planar magnetic headphones and dynamic\u003cbr\u003eheadphones with impedance from 300 to 600 Ohm\u003c\/p\u003e\n\u003cp\u003eSelecting impedance\/gain range to \"Mid\", stereo speakers (with a recommended sensitivity \u0026gt;94 db) can be connected to the 6.3mm headphone output and driven with approx. 5 Watt of output power.\u003c\/p\u003e\n\u003ch3\u003eELECTRICAL DESIGN\u003c\/h3\u003e\n\u003cp\u003eThe amplifier is made using \"point-to-point\" technology. All wired connections are custom made from single crystal copper (UPOCC – in case of Performance edition) with a Teflon isolation. On the input there is Alps Rk27 potentiometer, followed by a two-stage pre-amplifier with CV-181 tubes and hi-end coupling capacitors. Power tubes are directly heated 300B tubes. Output transformers as well as mains transformer are custom made hi-end audio units.\u003cbr\u003eThe amplifier has fully automatic bias and its electrical circuit is a \"zero feedback\" design. The power tubes are heated with direct current (DC) with a special circuit designed to separate the tubes heating from audio path powering. Power supply for anode voltages is designed on semiconductor and based on MOFSET transistors and low-noise current sources.\u003cbr\u003eOn the XLR balanced inputs, symmetrical audio-grade Lundahl transformers have been\u003cbr\u003eused. Audio source selection is made using high end relays (low signal relays), which are placed directly behind the input connectors, in order to limit interference and noise.\u003c\/p\u003e\n\u003ch2\u003eIN THE BOX\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMatched pair of driver tubes CV-181(6SN7)\u003c\/li\u003e\n\u003cli\u003eMatched pair of power tubes 300B\u003c\/li\u003e\n\u003cli\u003eAC cord\u003c\/li\u003e\n\u003cli\u003eUser Manual\u003c\/li\u003e\n\u003cli\u003eWarranty Card\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSPECIFICATIONS\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eClass A Single-ended transformer coupled amplifier\u003c\/strong\u003e\u003c\/p\u003e\n\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower tubes:\u003c\/strong\u003e 300B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDriver tubes:\u003c\/strong\u003e PsVane CV-181 mk2 (6SN7)\u003c\/li\u003e\n\u003cli\u003e2x unbalanced RCA inputs (IN1, IN2)\u003c\/li\u003e\n\u003cli\u003e1x balanced XLR input (IN3)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput sensitivity:\u003c\/strong\u003e 1V RMS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput impedance:\u003c\/strong\u003e\u003cbr\u003e– For IN1 i IN2 (RCA) 100kΩ\u003cbr\u003e– For IN3 (XLR) 10kΩ\u003c\/li\u003e\n\u003cli\u003e1x pair of pre-amplifier output as RCA\u003c\/li\u003e\n\u003cli\u003e1x pair of pre-amplifier output as XLR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMaximum voltage on the above outputs is 5V (RMS) at output impedance of 600Ω and THD\u0026lt;0,5%\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpedance selector guidance:\u003c\/strong\u003e\u003cbr\u003e– LO – up to 60Ω\u003cbr\u003e– MID – up to 300Ω\u003cbr\u003e– HI – up to 600Ω–mnh\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier’s impedance:\u003c\/strong\u003e\u003cbr\u003e– LO at 32Ω load is 3,8Ω\u003cbr\u003e– MID at 100Ω load is 8,8Ω\u003cbr\u003e– HI at 600Ω is 20Ω\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOutput powered measured at MID impedance setting at load of 16Ω is 5W with THD ⩽1% (maximum 8W at THD \u0026gt;5%)\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency response:\u003c\/strong\u003e\u003cbr\u003e– 8Hz÷100kHz ±3dB\u003cbr\u003e– 18Hz÷40kHz ±1dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadphone outputs:\u003c\/strong\u003e 6.3mm and XLR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC voltage 50\/60Hz:\u003c\/strong\u003e\u003cbr\u003e– 230V version (±5%)\u003cbr\u003e– 115V version (±5%)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower consumption:\u003c\/strong\u003e 110VA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 15,1kg (without packaging)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003cbr\u003e– 35x33x18,5cm (LxWxH) – without tubes\u003cbr\u003e– 35x33x24,5cm (LxWxH) – with tubes\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Feliks Audio","offers":[{"title":"American Walnut","offer_id":47478680649961,"sku":"Envy Performance-American Walnut (USA, 120V) (OB)","price":8999.1,"currency_code":"USD","in_stock":false},{"title":"Oak","offer_id":47478680584425,"sku":"Envy Performance-Oak (USA, 120V) (OB)","price":8819.1,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/5_f2cf56a7-eded-4bac-8a39-e1d1d434c66a.png?v=1762466573","url":"https:\/\/audio46.mom\/products\/feliks-audio-envy-performance-edition-flagship-tube-headphone-amplifier-open-box","provider":"Audio46 Headphone Store","version":"1.0","type":"link"}