{"product_id":"universal-audio-ua-bock-251-tube-condenser-microphone","title":"Universal Audio UA Bock 251 Large-Diaphragm Tube Condenser Microphone","description":"\u003cp\u003ePut a flagship, hand-built tube microphone at the center of your studio with the \u003cstrong\u003eUniversal Audio UA Bock 251\u003c\/strong\u003e. Designed by David Bock and handmade at the UA Custom Shop in Santa Cruz, California, this large-diaphragm condenser pairs a German-made CK12 capsule with a Cinemag output transformer and a NOS ECC85 tube.\u003c\/p\u003e\n\u003cp\u003eSwitchable cardioid, omnidirectional, and figure-8 patterns support focused vocal tracking, room capture, ensemble recording, and classic stereo techniques. Its extended response reaches down to 10 Hz, while the included true-linear power supply and proprietary cable form a complete matched system.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFlagship large-diaphragm tube condenser microphone designed by David Bock\u003c\/li\u003e\n\u003cli\u003eHandmade and individually tested at the UA Custom Shop in Santa Cruz, California\u003c\/li\u003e\n\u003cli\u003eGerman-made CK12 capsule\u003c\/li\u003e\n\u003cli\u003eCinemag output transformer and NOS ECC85 tube\u003c\/li\u003e\n\u003cli\u003eSwitchable cardioid, omnidirectional, and figure-8 polar patterns\u003c\/li\u003e\n\u003cli\u003eExtended 10 Hz–18 kHz frequency response\u003c\/li\u003e\n\u003cli\u003eComplete system with matched power supply, shockmount, cable, wooden microphone box, and premium suitcase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrophone type:\u003c\/strong\u003e Large-diaphragm tube condenser\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolar patterns:\u003c\/strong\u003e Cardioid, omnidirectional, figure-8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency response:\u003c\/strong\u003e 10 Hz–18 kHz, ±2 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum SPL:\u003c\/strong\u003e 118 dB SPL at 1% THD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitivity:\u003c\/strong\u003e 19 mV\/Pa\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput impedance:\u003c\/strong\u003e 200 ohms, transformer balanced\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended load:\u003c\/strong\u003e 1.2 kohms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube:\u003c\/strong\u003e NOS ECC85\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapsule:\u003c\/strong\u003e German-made CK12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrophone dimensions:\u003c\/strong\u003e 8.5 in long × 2 in diameter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrophone weight:\u003c\/strong\u003e 1.58 lb \/ 716 g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eUniversal Audio UA Bock 251 microphone\u003c\/li\u003e\n\u003cli\u003eShockmount\u003c\/li\u003e\n\u003cli\u003eUA Bock 251 true-linear power supply\u003c\/li\u003e\n\u003cli\u003e20 ft proprietary Tuchel cable\u003c\/li\u003e\n\u003cli\u003eWooden microphone box\u003c\/li\u003e\n\u003cli\u003ePremium vintage-style suitcase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSetup note:\u003c\/strong\u003e Use only the included matched power supply and proprietary six-pin Tuchel cable. The microphone does not require phantom power. The UA badge marks the front address side. Standard manufacturer warranty is two years, with one-year coverage for the tube; retain the original invoice.\u003c\/p\u003e","brand":"Universal Audio","offers":[{"title":"Default Title","offer_id":63970249376115,"sku":"MIC-UA251","price":5999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/9184\/9075\/files\/ua-bock-251_181550_1.webp?v=1786896336","url":"https:\/\/proaudioclinic.com\/products\/universal-audio-ua-bock-251-tube-condenser-microphone","provider":"Pro Audio Clinic","version":"1.0","type":"link"}