{"product_id":"jc5","title":"OA-JC5 Vacuum Tube Headphone Amplifier","description":"\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n        table {\n            width: 100%;\n            border-collapse: collapse;\n            margin: 20px 0;\n        }\n        th, td {\n            border: 1px solid #dddddd;\n            text-align: left;\n            padding: 8px;\n        }\n        th {\n            background-color: #f2f2f2;\n        }\n        h5 {\n            margin: 0;\n        }\n    \u003c\/style\u003e\n\u003cp\u003e\u003cstrong\u003eTube amplifier that delivers emotional mid-range expression with realism\u003c\/strong\u003e\u003cbr\u003eThe OA-JC5 is a hybrid headphone amplifier featuring a traditional 12AU7 vacuum tube in the pre-stage and 2SA1943 and 2SC5200 transistors in the post-stage.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\u003cspan lang=\"EN-US\"\u003e◆\u003c\/span\u003e\u003c\/span\u003eIt offers rich and clear sound quality, combining the warmth characteristic of vacuum tubes with the precision of transistors. The soft glow of the filaments and the blue light of the LEDs deepen and enhance the music listening experience.\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\u003cspan lang=\"EN-US\"\u003e◆\u003c\/span\u003e\u003c\/span\u003eBy employing different circuit configurations for the pre and post stages, it enables precise, noise-free signal amplification, achieving an emotional and expansive tone that fully encompasses all sound components of the music.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003ctable\u003e\n\n\u003cthead\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003eItem\u003c\/th\u003e\n\n\u003cth\u003eSpecification\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\n\u003ctd\u003e10Hz-80KHz (+\/- 1dB)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eS\/N Ratio\u003c\/td\u003e\n\n\u003ctd\u003e90dB\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eTHD+N\u003c\/td\u003e\n\n\u003ctd\u003e0.4% @1KHz\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eStereo Isolation\u003c\/td\u003e\n\n\u003ctd\u003e65dB @1KHz 32ohm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eMax Output Power\u003c\/td\u003e\n\n\u003ctd\u003e720mW @32ohm \/ 60mW @600ohm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eInput Sensitivity\u003c\/td\u003e\n\n\u003ctd\u003e500mV\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\n\n\u003ctd\u003e100K ohm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eOutput Impedance\u003c\/td\u003e\n\n\u003ctd\u003e\u0026lt; 1 ohm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eHeadphone Impedance\u003c\/td\u003e\n\n\u003ctd\u003e8-600 ohm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eGain\u003c\/td\u003e\n\n\u003ctd\u003e+12dB\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eAnalog Input Terminal\u003c\/td\u003e\n\n\u003ctd\u003eRCA\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eAnalog Output Terminal\u003c\/td\u003e\n\n\u003ctd\u003e6.35mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eVolume Control Type\u003c\/td\u003e\n\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eDimensions (mm)\u003c\/td\u003e\n\n\u003ctd\u003e125 x 100 x 70\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e*For the JOYCRAFT series, Oriolus completes the audio circuit, and customers assemble the product themselves, such as inserting vacuum tubes into sockets and assembling the frame.\u003cbr\u003e*The device requires a separately sold AC adapter (DC20V) to operate. (PD-compatible AC adapter and USB-C cable are not included).\u003cbr\u003e*\u003cmeta charset=\"utf-8\"\u003e(Regarding warranty) Due to the nature of a DIY kit, the warranty primarily covers initial defects only. Failures or damages resulting from replacement or modification of vacuum tube parts are not covered.\u003c\/span\u003e\u003c\/p\u003e","brand":"Oriolus","offers":[{"title":"OA-JC5","offer_id":42805337325667,"sku":"","price":25300.0,"currency_code":"JPY","in_stock":true},{"title":"Pre-order","offer_id":42805337358435,"sku":"","price":25300.0,"currency_code":"JPY","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0019\/0074\/0707\/files\/DSC03595.jpg?v=1726644233","url":"https:\/\/audiopassion.jp\/en\/products\/jc5","provider":"Audio Passion Lounge | オリオラスジャパン公式ショップ","version":"1.0","type":"link"}