{"product_id":"crackatwoa-headphone-amplifier","title":"Crackatwoa Headphone Amplifier Kit","description":"\u003cp\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eCrackatwoa is a premium version of the direct coupled Crack circuit - it \u003c\/span\u003etakes everything you love about the original Crack and dials it up. With an upgraded power supply and the Speedball constant current source built in, it delivers greater dynamic impact, tighter bass, and improved resolution—while maintaining the OTL magic that made the original a classic. Perfect for high-impedance headphones (200 ohms or higher - think \u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eSennheiser HD600\/650\/800, Beyerdynamic 250 and 600 ohms headphones, etc.)\u003c\/span\u003e and experienced builders seeking even more from their tube amp.\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\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\u003cbr\u003e\u003c\/p\u003e","brand":"Bottlehead","offers":[{"title":"Default Title","offer_id":52093288415601,"sku":"HPK-CRACKATWOA","price":965.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/6408\/6641\/files\/crackatwoa-headphone-amplifier-kit-5644141.jpg?v=1754731609","url":"https:\/\/bottlehead.mom\/products\/crackatwoa-headphone-amplifier","provider":"Bottlehead","version":"1.0","type":"link"}