{"title":"David Berning","description":null,"products":[{"product_id":"david-berning-quadrature-z-tube-monoblock-power-amplifiers-pair","title":"David Berning Quadrature Z Tube Monoblock Power Amplifiers; Pair","description":null,"brand":"David Berning","offers":[{"title":"Default Title","offer_id":51897221120281,"sku":"69297","price":12999.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/69297-5__74905.1730830721.1280.1280.jpg?v=1781700698"},{"product_id":"david-berning-quadrature-z-tube-monoblock-power-amplifiers-pair-1","title":"David Berning Quadrature Z Tube Monoblock Power Amplifiers; Pair","description":null,"brand":"David Berning","offers":[{"title":"Default Title","offer_id":51905590657305,"sku":"74259","price":11899.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/74259-5__03305.1738023515.1280.1280.jpg?v=1781803158"},{"product_id":"berning-tf-10-stereo-tube-preamplifier","title":"Berning TF-10 Stereo Tube Preamplifier","description":null,"brand":"David Berning","offers":[{"title":"Default Title","offer_id":51906751234329,"sku":"A8215 (1D)","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/12080920-8215-9__31176.1510723421.1280.1280.jpg?v=1769377020"},{"product_id":"david-berning-zh230-stereo-tube-amplifier-zh-230-silver","title":"David Berning ZH230 Stereo Tube Amplifier; ZH-230; Silver","description":null,"brand":"David Berning","offers":[{"title":"Default Title","offer_id":51912424522009,"sku":"41272","price":4299.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/41272-4__13124.1650899964.1280.1280.jpg?v=1769456209"},{"product_id":"berning-zotl-pre-one-stereo-tube-preamplifier-pre-1-silver","title":"Berning ZOTL Pre One Stereo Tube Preamplifier; Pre-1; Silver","description":null,"brand":"Berning","offers":[{"title":"Default Title","offer_id":51912427176217,"sku":"41277","price":3879.45,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/41277-4__36221.1651011546.1280.1280.jpg?v=1769456325"},{"product_id":"david-berning-zh270-stereo-tube-power-amplifier","title":"David Berning ZH270 Stereo Tube Power Amplifier","description":null,"brand":"David Berning","offers":[{"title":"Default Title","offer_id":51913442722073,"sku":"12065","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/12065-3__49490.1519407588.1280.1280.jpg?v=1769480692"},{"product_id":"david-berning-zh-230-stereo-tube-power-amplifier-zh230-modified","title":"David Berning ZH-230 Stereo Tube Power Amplifier; ZH230; Modified","description":null,"brand":"David Berning","offers":[{"title":"Default Title","offer_id":51913890365721,"sku":"22556*SFawcett","price":4499.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/37elyjF__50040.1577143326.1280.1280_5fc349a0-133a-4bc3-b921-cdd9699c77fa.jpg?v=1769506494"},{"product_id":"david-berning-tf-12-vintage-stereo-tube-preamplifier-tf12-mm-phono","title":"David Berning TF-12 Vintage Stereo Tube Preamplifier; TF12; MM Phono","description":null,"brand":"David Berning","offers":[{"title":"Default Title","offer_id":51918857208089,"sku":"30882*DFranke","price":2395.8,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/30882-6__81584.1612223318.1280.1280_3fad6a25-3b53-4633-9bce-477e2315cfae.jpg?v=1769557339"},{"product_id":"david-berning-zh230-tube-power-amplifier","title":"David Berning ZH270 OTL Power Amplifier","description":"Specifications: Output Wattage: 70 Watts per channel into 8 ohms (110 Watts per channel into 4 ohms). The David Berning ZH270 is an innovative output transformerless (OTL) power amplifier utilizing patented radio-frequency impedance conversion to drive dynamic loudspeakers directly. By eliminating audio output transformers, it delivers ultra-fast transient response and transparent signal purity. Equipped with two line-level inputs, an A\/B input selector, a built-in volume attenuator, and a 3-position feedback switch, the ZH270 functions seamlessly as a standalone power amplifier or a minimalist integrated unit with automated tube biasing.\n\nReviews acclaim the ZH270 for uniting solid-state speed and bass authority with pure tube musicality. Critics highlight its expansive soundstage, grain-free clarity, and articulate transient resolution across complex passages. Reviewers particularly praise the variable feedback feature for easy speaker matching, as well as its silent background and effortless retrieval of micro-dynamic details.\n\nAdding this acclaimed design to your setup provides a transparent window into your music collection with zero maintenance hassles thanks to its automated biasing and protective circuitry. Its unique capability to drive sources directly while delivering lightning-fast, lifelike dynamics makes it an extraordinary investment for any music enthusiast seeking pristine sound quality.","brand":"David Berning","offers":[{"title":"Default Title","offer_id":53066276798745,"sku":"99109","price":3899.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/99109-5.jpg?v=1792792537"},{"product_id":"david-berning-zh270-tube-power-amplifier","title":"David Berning ZH270 Tube Power Amplifier","description":"David Berning ZH270 delivers an output wattage of 70 watts per channel into 8 ohms and 110 watts per channel into 4 ohms. Utilizing patented Zero-Hysteresis Output Transformerless technology, this amplifier couples vacuum tubes to loudspeakers through radio-frequency impedance conversion rather than heavy iron-core audio transformers. This advanced architecture eliminates magnetic hysteresis, core saturation, and excessive heat, resulting in a lightweight, cool-running design. Equipped with dual switchable line inputs and an onboard level control, it operates with complete versatility as a high-resolution power amplifier or direct-drive integrated amplifier.\n\nCritical consensus across professional audio reviews and long-term owners celebrates the ZH270 for delivering breathtaking speed, veil-lifting transparency, and an expansive soundstage. Listeners consistently laud its ability to blend the dimensional midrange, timbral sweetness, and natural decay of premier tube designs with the blistering transient response, pitch-perfect timing, and authoritative bass control typical of top-tier solid-state gear. It has earned an enduring reputation for bulletproof reliability, low operating temperatures, and exceptional tube life reaching up to twenty years.\n\nOwning this masterwork connects listeners directly to the heart of their music, uncovering subtle details and emotional nuances with effortless grace. By combining transcendent musicality with everyday dependability, it offers the ultimate bridge between tube magic and solid-state precision, transforming any high-end audio system into an intimate live performance space.","brand":"David Berning","offers":[{"title":"Default Title","offer_id":67807221842201,"sku":"100799","price":3399.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/100799-5.jpg?v=1792590176"},{"product_id":"david-berning-zh270-tube-power-amplifier-1","title":"David Berning ZH270 Tube Power Amplifier","description":"David Berning ZH270 delivers an output wattage of 70 watts per channel into 8 ohms and 110 watts per channel into 4 ohms. Utilizing patented Zero-Hysteresis Output Transformerless technology, this amplifier couples vacuum tubes to loudspeakers through radio-frequency impedance conversion rather than heavy iron-core audio transformers. 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