{"product_id":"neo-classic-300b-rc-preamp-headphone-amp","title":"Neo-Classic 300B RC Preamp Headphone Amp","description":"\u003cbuilder-component rev=\"28coxv7vcx3\" api-key=\"48d1cdcd52ec4d289f1ef8c4f75da167\" options='{\"locale\":\"Default\"}' name=\"product-description\" entry=\"9fe87ae3ec90463d9481b77b42a0d580\"\u003e\n\n\u003c!-- ***** Generated by Builder.io on Mon, 10 Aug 2026 15:23:54 GMT ***** --\u003e\n\n\u003cstyle type=\"text\/css\" class=\"builder-styles builder-api-styles\"\u003e\/*start:h47494*\/.css-h47494{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;-webkit-align-items:stretch;-webkit-box-align:stretch;-ms-flex-align:stretch;align-items:stretch;}\/*end:h47494*\/ 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srcset=\"https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd655d4f2e12e4e60990ad9d0f9a824b9?format=webp\u0026amp;width=100 100w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd655d4f2e12e4e60990ad9d0f9a824b9?format=webp\u0026amp;width=200 200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd655d4f2e12e4e60990ad9d0f9a824b9?format=webp\u0026amp;width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd655d4f2e12e4e60990ad9d0f9a824b9?format=webp\u0026amp;width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd655d4f2e12e4e60990ad9d0f9a824b9?format=webp\u0026amp;width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd655d4f2e12e4e60990ad9d0f9a824b9?format=webp\u0026amp;width=1600 1600w, 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https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd655d4f2e12e4e60990ad9d0f9a824b9?width=400 400w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd655d4f2e12e4e60990ad9d0f9a824b9?width=800 800w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd655d4f2e12e4e60990ad9d0f9a824b9?width=1200 1200w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd655d4f2e12e4e60990ad9d0f9a824b9?width=1600 1600w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd655d4f2e12e4e60990ad9d0f9a824b9?width=2000 2000w, https:\/\/cdn.builder.io\/api\/v1\/image\/assets%2F48d1cdcd52ec4d289f1ef8c4f75da167%2Fd655d4f2e12e4e60990ad9d0f9a824b9?width=1585 1585w\" sizes=\"(max-width: 638px) 35vw, (max-width: 998px) 59vw, 114vw\"\u003e\u003c\/picture\u003e\u003cstyle data-emotion-css=\"ew2w8k\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-image-sizer css-ew2w8k\"\u003e \u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1nxjzs8\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-be3a6edca5fe4d80b11baf41865a8d4b builder-has-component css-1nxjzs8\" builder-id=\"builder-be3a6edca5fe4d80b11baf41865a8d4b\"\u003e\n\u003cstyle data-emotion-css=\"1qggkls\"\u003e\u003c\/style\u003e\n\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eManley Labs introduces their most esoteric creation yet: THE 300B PREAMPLIFIER, a pioneering addition to their lineup. This preamplifier stands as a testament to innovation, being the first and only preamp to incorporate the classic 300B tubes renowned for their smooth and natural sound. With a history of integrating 300B tubes into small power amps, Manley Labs recognized their potential for delivering appropriate power and voltage swing, particularly for headphones and as a remarkable line driver. Capitalizing on this realization, they crafted a preamp that showcases the 300B's capabilities in a single-ended configuration, where impedances are ideal and power requirements are met.\u003c\/p\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"builder-block builder-8124300e5bf14537a6c19846e1cfa4bd builder-has-component css-1nxjzs8\" builder-id=\"builder-8124300e5bf14537a6c19846e1cfa4bd\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eThe heart of the design pairs the historic 300B with another classic, the large octal-based 6SL7GT, forming the input stage. Both triodes operate in pure Class A, ensuring pristine signal amplification. Embracing a retro aesthetic, the preamp incorporates vacuum tube rectification and regulation in the power supply, bolstered by ample capacity for stability and consistency. Notably, an innovative ripple rejection circuit is integrated to meticulously filter out power supply noise, a crucial feature for headphone enthusiasts demanding an ultra-low noise floor.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1vp0obg\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-7835d7cd15e94031addbf6ffb59e5358 builder-has-component css-1vp0obg\" builder-id=\"builder-7835d7cd15e94031addbf6ffb59e5358\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eTo deliver an unmatched audio experience, the 300B PREAMPLIFIER boasts an array of premium components and craftsmanship. It features an ALPS audiophile volume control for precise adjustments, gold-plated RCA connectors for superior connectivity, and high-purity silver wire for signal transmission. The use of mil-spec printed circuit boards with extra thick copper and plating ensures durability and reliability. Moreover, custom-designed output transformers, meticulously wound in Manley Labs' own magnetics department, contribute to the preamp's rich and captivating sound signature. In essence, THE 300B PREAMPLIFIER embodies Manley Labs' commitment to excellence, merging timeless tube technology with modern innovation to deliver an unparalleled listening experience for discerning audiophiles.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"o852iw\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-9ad324e97f704fe3840061248cc7063b builder-has-component css-o852iw\" builder-id=\"builder-9ad324e97f704fe3840061248cc7063b\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003eDragon Audio Cable Recommendation:\u003c\/strong\u003e We recommend pairing the Manley Lab's 300B RC Preamp Headphone Amp with the \u003ca href=\"https:\/\/www.moon-audio.pro\/silver-dragon-interconnect-cable-v2.html\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eSilver Dragon Interconnect\u003c\/a\u003e. Sold in Pairs, the Silver Dragon V2 is our top-of-the-line silver conductor-based interconnect. With a braided geometry and amazing shielding, this interconnect is a remarkable solution where noise isolation is key. The Silver Dragon is the original cable. Silver strands clarify instrument separation, increase soundstage, and find previously lost high and mid-frequency sounds. Transients appear more cohesive and the bass is tighter for a more controlled sound.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"13huzgn\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-e9b96c904cbc46599f4aa1ae08f18af3 builder-has-component css-13huzgn\" builder-id=\"builder-e9b96c904cbc46599f4aa1ae08f18af3\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eFeatures:\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"5bxdc0\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-906ff2c710314881b60a8eb453d1e770 builder-has-component css-5bxdc0\" builder-id=\"builder-906ff2c710314881b60a8eb453d1e770\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eClassic Tube Design:\u003c\/strong\u003e The preamplifier utilizes classic 300B tubes, renowned for their smooth and natural sound reproduction, offering a vintage appeal with modern performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriode Operation:\u003c\/strong\u003e All triodes, including the 300B and 6SL7GT tubes, operate in pure Class A mode, ensuring accurate and distortion-free amplification of the audio signal.\u003c\/li\u003e\n\u003cli\u003eS\u003cstrong\u003eingle-Ended Configuration:\u003c\/strong\u003e The preamp is designed in a single-ended configuration, providing ideal impedance matching and power delivery for optimal performance, particularly with headphones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVacuum Tube Rectification and Regulation: \u003c\/strong\u003eIncorporates vacuum tube rectification and regulation in the power supply, enhancing stability and reducing noise for a cleaner audio signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRipple Rejection Circuit:\u003c\/strong\u003e Features an innovative ripple rejection circuit that effectively filters out power supply noise, ensuring an ultra-low noise floor and pristine audio reproduction, especially critical for headphone users.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eALPS Audiophile Volume Control:\u003c\/strong\u003e Equipped with an ALPS audiophile volume control for precise and smooth volume adjustments, allowing users to fine-tune their listening experience with precision.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGold-Plated RCA Connectors:\u003c\/strong\u003e Utilizes gold-plated RCA connectors for high-quality audio connections, ensuring minimal signal loss and maximum conductivity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Purity Silver Wire:\u003c\/strong\u003e Incorporates high-purity silver wire for signal transmission, minimizing signal degradation and preserving the integrity of the audio signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMil-Spec Printed Circuit Boards:\u003c\/strong\u003e Features mil-spec printed circuit boards with extra thick copper and plating, ensuring durability, reliability, and optimal signal integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom-Designed Output Transformers:\u003c\/strong\u003e Utilizes custom-designed output transformers, hand-wound in Manley Labs' own magnetics department, to ensure precise and consistent signal transmission, contributing to the preamp's rich and captivating sound signature.\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"uhvjz\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-514fdfd029ca4c819f010facea8b586f builder-has-component css-uhvjz\" builder-id=\"builder-514fdfd029ca4c819f010facea8b586f\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eAbout Manley Laboratories:\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"sikn61\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-4e8b91aa879940e1827fb4b9eb1ce506 builder-has-component css-sikn61\" builder-id=\"builder-4e8b91aa879940e1827fb4b9eb1ce506\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003eManley Laboratories, based in California, stands as a premier name in the audio industry, renowned for crafting high-end audio equipment that exceeds expectations. With a legacy spanning decades, their commitment to excellence is evident in every product they create. From professional-grade microphone preamps (micpre) with pristine XLR mic inputs to versatile direct inputs for guitars and vocals, Manley Laboratories ensures exceptional sound quality and versatility for any recording, performance, or music-listening scenario. They also create tube microphone preamplifiers (Tube mic preamp), limiters, headphone amplifiers with dual triodes, and more for all the headroom you need for pro audio and consumer audio applications. Their meticulous attention to detail extends to metering and compression, compressors, providing precise control over dynamics and ensuring optimal analog-like audio performance. Backed by a robust warranty, Manley Laboratories' audio interfaces and equipment offer peace of mind, promising reliability and longevity for years to come. Whether in the studio or on stage, musicians and audio professionals\/enthusiasts trust Manley Laboratories to deliver unmatched quality and performance.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"dioqi2\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-72776871def84efc8e890d00c896fa95 builder-has-component css-dioqi2\" builder-id=\"builder-72776871def84efc8e890d00c896fa95\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003ch3\u003eF.A.Q\u003c\/h3\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"9g1zew\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-0e7832bbb35b44928fe32485a7a56095 builder-has-component css-9g1zew\" builder-id=\"builder-0e7832bbb35b44928fe32485a7a56095\"\u003e\u003cspan class=\"builder-text css-1qggkls\"\u003e\u003cp\u003e\u003cstrong\u003eQ: What tubes does the Manley Labs Neo-Classic 300B RC Preamplifier use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The Neo-Classic 300B RC Preamplifier utilizes 300B tubes in its circuitry, renowned for their smooth and natural sound reproduction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the purpose of the remote control with the Neo-Classic 300B RC Preamplifier?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The remote control allows users to adjust volume, input selection, and other settings from a distance, providing convenience and flexibility in operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use the Neo-Classic 300B RC Preamplifier with both digital and analog sources?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the preamplifier is designed to accommodate both digital and analog sources, offering versatility in audio system setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many inputs does the Neo-Classic 300B RC Preamplifier have?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The preamplifier features multiple inputs, typically including options for analog and digital sources, allowing users to connect various audio components. See the specifications for more information.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between the Neo-Classic 300B RC Preamplifier and other preamplifiers on the market?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The Neo-Classic 300B RC Preamplifier distinguishes itself with its use of 300B tubes and meticulous circuit design, resulting in exceptional sound quality and performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the Neo-Classic 300B RC Preamplifier suitable for use with high-end audio systems?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the preamplifier is designed to meet the demands of high-end audio systems, delivering superior sound quality and compatibility with a wide range of audio components.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What kind of warranty coverage does the Neo-Classic 300B RC Preamplifier come with?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The preamplifier is backed by a comprehensive warranty from Manley Laboratories, providing peace of mind and support for your investment. See the manual for more info.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the Neo-Classic 300B RC Preamplifier perform in terms of durability and reliability?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The preamplifier is built with high-quality components and robust construction, ensuring long-term durability and reliability for years of enjoyment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I upgrade or customize the Neo-Classic 300B RC Preamplifier?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: While the preamplifier is designed to offer exceptional performance out of the box, Manley Laboratories may offer upgrade options or customizations for users seeking further enhancements. Tube-rolling is always encouraged but make sure that replacement tubes are compatible and in the range of appropriate specs for the amplifier. Feel free to Contact Us if you have specific questions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What kind of speakers are compatible with the Neo-Classic 300B RC Preamplifier?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The preamplifier is compatible with a wide range of speakers, but it is important to consider factors such as sensitivity and impedance matching for optimal performance.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"4n3vfn\"\u003e\u003c\/style\u003e\n\u003cdiv class=\"builder-block builder-b83187249753466abad1df50ff905dc1 css-4n3vfn\" builder-id=\"builder-b83187249753466abad1df50ff905dc1\"\u003e\u003c\/div\u003e\n\u003cstyle data-emotion-css=\"1n465md\"\u003e\u003c\/style\u003e\n\u003cimg src=\"https:\/\/cdn.builder.io\/api\/v1\/pixel?apiKey=48d1cdcd52ec4d289f1ef8c4f75da167\" aria-hidden=\"true\" alt=\"\" role=\"presentation\" width=\"0\" height=\"0\" class=\"builder-block builder-pixel-09qo0r1cs52w css-1n465md\" builder-id=\"builder-pixel-09qo0r1cs52w\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/builder-component\u003e\n\u003cscript async src=\"https:\/\/cdn.builder.io\/js\/webcomponents\"\u003e\u003c\/script\u003e","brand":"Manley Labs","offers":[{"title":"Black \/ Open Box","offer_id":51562578215226,"sku":"MANLEY-ABSOLUTE-BLACK-OPENBOX","price":7199.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ New","offer_id":48492542460218,"sku":"manley_absolute_amp-Black-1-1","price":7999.0,"currency_code":"USD","in_stock":true},{"title":"Blue \/ New","offer_id":48492542427450,"sku":"manley_absolute_amp-Copper-1-1","price":7999.0,"currency_code":"USD","in_stock":true},{"title":"Silver \/ New","offer_id":48492542492986,"sku":"manley_absolute_amp-SI-1-1","price":7999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/0245\/7402\/files\/manley-neo3br_blue-front__24167.1714765468.1280.1280.jpg?v=1719257274","url":"https:\/\/www.moon-audio.pro\/products\/neo-classic-300b-rc-preamp-headphone-amp","provider":"Moon Audio","version":"1.0","type":"link"}