{"product_id":"balanced-audio-technology-vk-90-tube-preamplifier","title":"Balanced Audio Technology VK-90 Tube Preamplifier","description":"\u003ch1\u003eBalanced Audio Technology VK-90 Tube Preamplifier\u003c\/h1\u003e\n\u003ch3\u003eSecond-generation transformer-coupled outputs provide exceptional purity\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp\u003eFeaturing transformer-coupled, high-current, single-gain stage topology, VK-90 is the finest single-chassis preamplifier ever created by Balanced Audio Technology. Wound with Cardas’ finest copper wire, the second-generation transformer-coupled outputs catapult the performance of this fully balanced, zero-feedback design to a reference level.\u003c\/p\u003e\n\u003cp\u003eEach transformer comes encapsulated within a mu-metal shield for the ultimate in signal purity and noise isolation. Electrically, these second-generation transformers improve VK-90’s ability to drive low-impedance loads. Sonically, they offer greater transparency than the already revered performance established by BAT’s first-generation transformer design.  \u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eFlexible User Interface\u003c\/h4\u003e\n\u003cp\u003eBoasting one of the most flexible user interfaces in the industry, VK-90 offers customizable options that range from dimming to fading and source-naming. It can also be fully upgraded to a REX 3 preamplifier. And you can always get the volume just right courtesy of a proprietary electronic shunt volume attenuator that offers 140 steps of 0.5 dB resolution. In the design, discrete metal film resistors bleed the unused signal to ground. From deep bass to extraordinary dynamics and layered transparency, VK-90 is your new reference. \u003c\/p\u003e\n\u003ch4\u003eEight 6H30 SuperTubes\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cp\u003eMore than a decade ago, BAT introduced the world to the 6H30 SuperTube. VK-90 continues the tradition by using eight 6H30 SuperTubes to form an extraordinarily high-current, low-impedance drive engine. The signal is effectively transmitted through only one gain stage. The Unistage™ circuit provides the ultimate simplicity of amplifying the incoming signal only once, while using no global feedback to double back on the straight-through signal integrity.\u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003eSuperPak Power\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eThe VK-90 preamplifier features Balanced Audio Technology’s all-new, third-generation SuperPak in its power supply. The design represents a significant rethinking of what is possible from an energy storage device. The SuperPak features hybrid construction with two capacitors built and potted into each individual low-resonance shell. An additional silver-in-oil capacitor—arguably the finest-quality capacitor offered at any price in the industry—is used as part of the Gen 3’s construction. The result: Low-level detail is revealed in a clear and unforced manner, while the overall sound takes on a beguiling sweetness and naturalness from top to bottom.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-mce-fragment=\"1\"\u003eThird generation SuperPak with 4x50 uF with internal silver\/oil hybrid construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-mce-fragment=\"1\"\u003eSilver gold oil bypass caps\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-mce-fragment=\"1\"\u003eUnistage design with only one gain block and no capacitors in signal path\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-mce-fragment=\"1\"\u003eOutput second generation output transformers with Cardas OFC wiring\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-mce-fragment=\"1\"\u003eZero global feedback\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eAbsolute polarity switchable\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan data-mce-fragment=\"1\"\u003eSpecifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003eInputs:\u003c\/strong\u003e 5 x XLR\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003eOutputs:\u003c\/strong\u003e 2 x XLR, 1 x XLR (Tape)\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003eGain:\u003c\/strong\u003e 18 dB\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003eVol Control Resolution:\u003c\/strong\u003e 140 x 0.5 dB steps\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003eTube Complement:\u003c\/strong\u003e 4 x 6H30, 2 x 6C19\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003eInput Impedance (min):\u003c\/strong\u003e 100 kΩ\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003eOutput Impedance:\u003c\/strong\u003e 200 Ω\u003cbr\u003e\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 250 VA\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e19\" x 5.75\" x 15.5\"\u003cstrong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e40 lb\u003c\/p\u003e","brand":"Balanced Audio Technology","offers":[{"title":"Silver","offer_id":39688809021624,"sku":"VK-90-SIL","price":14995.0,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":39688808988856,"sku":"VK-90 BLK","price":14995.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1564\/1247\/products\/BAT-VK-90-Black_2048x2048_25b3d947-ab38-447e-9d87-e8b7c27a5cb0.jpg?v=1741630958","url":"https:\/\/upscaleaudio.pro\/products\/balanced-audio-technology-vk-90-tube-preamplifier","provider":"Upscale Audio","version":"1.0","type":"link"}