{"title":"Power Amplifiers","description":"\u003cp\u003eOur amplifiers deliver clear, balanced sound from your audio source of choice. Pair one with a Bottlehead preamplifier for added source or volume controls.\u003c\/p\u003e","products":[{"product_id":"sublime-subwoofer-amplifier-kit","title":"Sublime Subwoofer Amplifier Kit","description":"\u003cp\u003e\u003cspan\u003eAn amplifier to drive your subwoofer\u003c\/span\u003e \u003cspan\u003ewhile complementing the look of all your Bottlehead gear. Allows adding a subwoofer to every amp and preamp we make. Use one Sublime for a single subwoofer used with stereo main speakers. Use two Sublimes for stereo subwoofers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cem\u003eOur kits do not come with a badge, but you can buy one \u003ca href=\"https:\/\/bottlehead.mom\/collections\/accessories\/products\/bottlehead-badge\" title=\"Bottlehead Badge\"\u003ehere\u003c\/a\u003e. Because of a weird quirk in Shopify's shipping, international customers will need to drop a request in their amp's order notes instead of adding one to cart.\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Bottlehead","offers":[{"title":"Default Title","offer_id":52102751846769,"sku":"AMPK-SUBLIME","price":355.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/6408\/6641\/files\/sublime-subwoofer-amplifier-kit-1488881.jpg?v=1752975579"},{"product_id":"kaiju-300b-amplifier-kit","title":"Bottlehead Kaiju 300B Amplifier Kit","description":"\u003cp class=\"p1\"\u003eKaiju is our premium 300B power amplifier designed for those who want both finesse \u003cem\u003eand\u003c\/em\u003e muscle. Delivering 8 watts per channel with classic triode richness and outstanding clarity, it’s a powerful partner for high-efficiency speakers. Whether you’re driving full-range drivers or classic horns, Kaiju’s spacious soundstage and articulate dynamics bring music to life with authority. Kaijus can also be wired as monoblocks to double their power output - just buy a second kit and we'll help you configure your build to accommodate.\u003cbr\u003e\u003cbr\u003eYou can learn more about the DC Filament Supply upgrade for this kit, which lowers the (already low) level of noise in super efficient speakers at \u003ca href=\"https:\/\/bottlehead.mom\/product\/dc-filament-supply-for-kaiju-300b-amplifier\/\" rel=\"noopener noreferrer\" target=\"_blank\"\u003ethis \u003c\/a\u003e\u003ca title=\"DC Filament Supply for Kaiju 300B Amplifier\" href=\"..\/..\/..\/..\/..\/products\/dc-filament-supply-for-kaiju-300b-amplifier\/\" rel=\"noopener noreferrer\" target=\"_blank\"\u003elink\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eWe consider the Kaiju to be a level three kit, which means that we still think anyone can build it, but less experienced builders might want to cut their teeth on a couple smaller soldering projects first.\u003cbr\u003e\u003cbr\u003eThe Kaiju has a universal power transformer and can be used worldwide by following the wiring instructions in the manual. Please note that \u003cstrong\u003eI\u003c\/strong\u003e\u003cstrong\u003enternational customers will need to provide their own power cord.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cem\u003eWe're now including the square version of our badge in each amplifier and preamplifier kit. If you prefer the word mark version, please note that in your order.\u003c\/em\u003e\u003c\/p\u003e","brand":"Bottlehead","offers":[{"title":"Default Title","offer_id":52102751879537,"sku":"AMPK-KAIJU","price":2145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/6408\/6641\/files\/kaiju-300b-amplifier-kit-8026421.jpg?v=1752975579"},{"product_id":"stereomour-ii-stereo-single-ended-integrated-2a3-amp","title":"Bottlehead Stereomour II Stereo Single Ended Integrated 2A3 Amp","description":"\u003cp class=\"p1\"\u003eThe Bottlehead Stereomour II is a single-ended 2A3 stereo amplifier delivering 3.5 watts per channel of pure triode magic. With its natural tone and vivid midrange, it’s the ideal match for high-efficiency speakers in nearfield, desktop, or intimate room setups. Built-in volume control and input switching let it operate as an integrated amp.\u003c\/p\u003e\n\u003cp\u003eThe Stereomour II has three incredible upgrades that make it a tinkerer's dream. Lower the already-low noise floor with the \u003ca title=\"DC Filament Supply Upgrade for Stereomour II\" href=\"..\/..\/..\/..\/..\/products\/dc-filament-supply-for-stereomour-ii-amplifier\" rel=\"noopener\" target=\"_blank\"\u003eDC Filament Supply Upgrade\u003c\/a\u003e, add a premium coarse and fine stepped volume controls with the \u003ca title=\"MourQuiet Stepped Attenuator Upgrade for Stereomour II\" href=\"..\/..\/..\/..\/..\/products\/mourquiet-stepped-attenuator-upgrade-for-stereomour-ii\" rel=\"noopener\" target=\"_blank\"\u003eMourQuiet Attenuator\u003c\/a\u003e, and expand dynamic performance with the \u003ca title=\"Shunt Regulator Upgrade for Stereomour II\" href=\"..\/..\/..\/..\/..\/products\/stereomour-ii-shunt-regulator-upgrade-kit\" rel=\"noopener\" target=\"_blank\"\u003eShunt Regulator Upgrade\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eWe have a vibrant community on \u003ca title=\"Bottlehead Forums\" href=\"https:\/\/forums.bottlehead.mom\" rel=\"noopener\" target=\"_blank\"\u003eour forums\u003c\/a\u003e. Check out user impressions, get inspiration for your build, and chat with us if you need help getting your kit assembled.\u003c\/p\u003e\n\u003cp\u003eThe Steremour II has a universal power transformer and can be used worldwide by following the wiring instructions in the manual. Please note that \u003cstrong\u003einternational customers will need to provide their own power cord.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWe're now including the square version of our badge in each amplifier and preamplifier kit. If you prefer the word mark version, please note that in your order.\u003c\/em\u003e\u003c\/p\u003e","brand":"Bottlehead","offers":[{"title":"Default Title","offer_id":52102751912305,"sku":"AMPK-STEREOMOUR-II","price":1485.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/6408\/6641\/files\/stereomour-ii-stereo-single-ended-integrated-2a3-amp-8218449.jpg?v=1752975579"},{"product_id":"sex-4-kit-for-headphones-speakers","title":"Bottlehead SEX 4 Kit for Headphones \u0026 Speakers","description":"\u003cp\u003eSay hello to the new Single Ended eXperimentation (SEX) kit!\u003c\/p\u003e\n\u003cp\u003eThe SEX 4 has a ton of changes under the hood. For starters, it uses two 6FM7 tubes and a refined circuit to drive more than double the power of the SEX 3. We’ve heard from builders that they’re increasingly using preamps and digital sources, so we’ve removed the volume control. This plus the roomier chassis provides ample opportunity for experimentation.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSpeaking of experimentation, we’ve added a useful experiment to the stock kit. Sitting front and center is a new switch. Flipping it \u003c\/span\u003e\u003cspan\u003econtrols the\u003c\/span\u003e\u003cspan\u003e amount of local, plate-to-plate feedback \u003c\/span\u003e\u003cspan\u003eapplied\u003c\/span\u003e\u003cspan\u003e in the \u003c\/span\u003e\u003cspan\u003ecircuit\u003c\/span\u003e\u003cspan\u003e. What does that mean? The higher feedback allows the SEX to act as a low-gain power amplifier with \u003c\/span\u003e\u003cspan\u003etighter\u003c\/span\u003e\u003cspan\u003e mid- and low-end performance and a blacker background. Switching to lower feedback mode gets you performance closer to a traditional desktop tube headphone amp. You should see more warmth, emotion, and character.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn either feedback mode, the SEX 4 feels a lot more controlled than the SEX 3 in the bass department, and the lower gain option mates solidly to a Moreplay and avoids hair trigger volume control issues. We’ve built a bundle so you can buy both the SEX 4 and the Moreplay at a discount.\u003c\/p\u003e\n\u003cp\u003eSEX 4 has a universal power transformer and can be used worldwide by following the wiring instructions in the manual. Please note that \u003cstrong\u003einternational customers will need to provide their own power cord\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWe're now including the square version of our badge in each amplifier and preamplifier kit. If you prefer the word mark version, please note that in your order.\u003c\/em\u003e\u003c\/p\u003e","brand":"Bottlehead","offers":[{"title":"Default Title","offer_id":55747018359153,"sku":"COMBOK-SEX-4-0","price":885.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/6408\/6641\/files\/more-sex-combo-5145595.png?v=1757954364"},{"product_id":"sex-4-moreplay-bundle","title":"More SEX Combo","description":"\u003cp\u003eWe built the SEX 4 to be the perfect companion to our popular Moreplay preamplifier. We're offering the two as a bundle at a discount. After all, everyone could use More SEX. In this kit you'll get:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener noreferrer\" title=\"Bottlehead SEX 4 Kit\" href=\"https:\/\/bottlehead.mom\/products\/single-ended-experimenters-kit-4-0-for-headphones-sensitive-speakers\" target=\"_blank\"\u003eThe all-new SEX 4 amplifier kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener noreferrer\" title=\"Bottlehead Moreplay Preamplifier Kit\" href=\"https:\/\/bottlehead.mom\/products\/moreplay-preamplifier-kit\" target=\"_blank\"\u003eOur best-selling Moreplay preamplifier kit\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGet 10% off the \u003ca rel=\"noopener noreferrer\" title=\"Moreplay Upgrade Kit\" href=\"https:\/\/bottlehead.mom\/products\/moreplay-upgrade-kit\" target=\"_blank\"\u003eMoreplay Upgrade\u003c\/a\u003e and \u003ca rel=\"noopener noreferrer\" title=\"Bottlehead Power Cord Kit\" href=\"https:\/\/bottlehead.mom\/products\/bottlehead-power-cord-kit\" target=\"_blank\"\u003ePower Cord kit\u003c\/a\u003e if you buy them with the combo! \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWe're now including the square version of our badge in each amplifier and preamplifier kit. If you prefer the word mark version, please note that in your order.\u003c\/em\u003e\u003c\/p\u003e","brand":"Bottlehead","offers":[{"title":"Default Title","offer_id":62394534494577,"sku":"BUNDLE-MORESEX","price":1219.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/6408\/6641\/files\/more-sex-combo-8153832.png?v=1759027208"},{"product_id":"bottlehead-paradyne-805a-monoblock-amplifier-kit","title":"Bottlehead Paradyne 805A Monoblock Amplifier Kit","description":"\u003ch4 class=\"p1\"\u003e\n\u003cb\u003eThirty-five watts of single-ended authority. Our finest design yet.\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/h4\u003e\n\u003cp class=\"p3\"\u003eFifteen years of development have gone into this design, and you can tell.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s2\"\u003eBuilt around the legendary \u003c\/span\u003e\u003cstrong\u003e805A\u003c\/strong\u003e transmitting tube\u003cspan class=\"s2\"\u003e, Paradyne is the most powerful amplifier kit we have ever offered. At \u003c\/span\u003e\u003cb\u003e35 watts per channel\u003c\/b\u003e\u003cspan class=\"s2\"\u003e, delivered through a \u003c\/span\u003etrue single-ended monoblock topology\u003cspan class=\"s2\"\u003e, it produces \u003c\/span\u003e\u003cb\u003etwice the power of a Kaiju run as monoblocks, \u003c\/b\u003e\u003cspan class=\"s2\"\u003eand almost \u003c\/span\u003e\u003cb\u003efour times the output of a single Kaiju amplifier\u003c\/b\u003e\u003cspan class=\"s2\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThis is a big step forward for our kits.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eSingle-ended amplifiers are prized for immediacy, tone density, and realism but they are rarely associated with real power. Paradyne was created to challenge that assumption.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eParadyne was designed by the holy trinity of legendary audio gurus Paul Birkeland, Paul Joppa, and Dan Schmalle. By combining the brute force of the 805A with a carefully considered driver and output stage using \u003cspan class=\"s1\"\u003e\u003cb\u003e7L7 and 6BL7 tubes\u003c\/b\u003e\u003c\/span\u003e, Paradyne delivers headroom, control, and scale that redefine what a single-ended amplifier can do with a wide range of loudspeakers. The result is an amplifier that retains the harmonic richness Bottlehead is known for while driving speakers that would have been unthinkable with earlier designs.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eIron Maidens\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eParadyne includes all-new, Bottlehead-designed iron. That means you're getting a cutting edge power transformer, our beefiest output transformer, and a new and improved plate choke. This new suite of iron provides performance gains over previous designs, and allows for switching output impedances by moving one ring terminal instead of re-wiring the secondary.\u003c\/p\u003e\n\u003ch4\u003e\u003cb\u003ePurpose-Built Monoblocks\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp class=\"p3\"\u003eEach Paradyne kit includes \u003cspan class=\"s2\"\u003e\u003cb\u003ea pair of monoblocks\u003c\/b\u003e\u003c\/span\u003e, because this amplifier was never meant to be compromised by a shared power supply or layout constraints. Separating the layout into two chassis allowed us to provide:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eDedicated power and output stages per channel\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eShorter signal paths\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eGreater channel separation\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eAbsolute focus on performance\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eEasier user serviceability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eThis is power done properly.\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThese amps ship in two separate, well packed, insured boxes to ensure we can protect the components (and because they're heavy). Once shipped you'll get separate tracking codes for each box.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cem\u003eT\u003c\/em\u003e\u003cem\u003ehis product has a universal power transformer and can be used worldwide.  Please note that \u003cstrong\u003einternational customers will need to provide their own power cord.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cem\u003eWe're now including the square version of our badge in each amplifier and preamplifier kit. If you prefer the word mark version, please note that in your order.\u003c\/em\u003e\u003c\/p\u003e","brand":"Bottlehead","offers":[{"title":"Bottlehead logo without name","offer_id":63388612395377,"sku":"AMPK-PARADYNE-SQUARE","price":5499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/6408\/6641\/files\/Bottlehead_Paradyne_Hero.jpg?v=1775339814"},{"product_id":"the-bottlehead-reference-system","title":"The Bottlehead Reference System","description":"\u003cp\u003eBeePre2 and Paradyne were designed with the same goals in mind: high headroom, low noise, and a direct, unforced presentation. Together, they deliver power and warmth without effort. With a conservatively rated 35 watts per channel, Paradyne brings nearly three times the output of our next most powerful amp, and BeePre2 is built to drive it properly.BeePre2’s low output impedance and ample voltage swing give Paradyne exactly what it wants at the input, with control and clarity intact. The result is a signal chain that stays stable from source to speaker, preserving dynamics, tone, and space without strain. No workarounds or mismatches. Just a front end and power stage operating as a system. Grab the combo for a 15% discount. \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eWe're now including the square version of our badge in each amplifier and preamplifier kit. If you prefer the word mark version, please note that in your order.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote: volume discounts do not apply to packages like the Reference System or MoreSex Combo.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Bottlehead","offers":[{"title":"Bottlehead logo without name","offer_id":63353707495793,"sku":null,"price":5970.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/6408\/6641\/files\/Bottlehead_Reference_System.jpg?v=1775339867"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/6408\/6641\/collections\/power-amplifiers-2108126.jpg?v=1775564843","url":"https:\/\/bottlehead.mom\/collections\/power-amplifiers.oembed","provider":"Bottlehead","version":"1.0","type":"link"}