{"product_id":"sennheiser-closed-circumaural-headset-activegard-limiting-technology-active-noise-compensation-noisegard-supercardioid-dynamic-microphone-cable-not-included-700324","title":"Sennheiser Closed circumaural headset, ActiveGard limiting technology, Active noise compensation (NoiseGard), supercardioid dynamic microphone, cable not included (700324)","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Sennheiser HMD 300 PRO with NoiseGard (SKU 700324) is a closed circumaural broadcast headset combining switchable ActiveGard hearing protection, active NoiseGard noise compensation, and a supercardioid dynamic boom microphone. Designed for demanding broadcast, live production, and outside broadcast environments where both incoming audio fidelity and outgoing voice intelligibility must be maintained under high ambient noise conditions. Cable sold separately; compatible with the Sennheiser Cable 26-II series.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe HMD 300 PRO NoiseGard adds active noise compensation to the proven HMD 300 PRO platform, providing an additional layer of ambient noise reduction beyond the passive attenuation of the closed circumaural earcup construction. ActiveGard hearing protection — switchable with three attenuation settings (off \/ 95 dB \/ 110 dB) — guards against sudden audio bursts above 110 dB, protecting hearing during extended broadcast sessions in high-energy environments. The supercardioid dynamic microphone delivers clear, intelligible voice communication in noisy backstage, production floor, and outdoor broadcast environments, with a frequency response optimized for speech intelligibility. Maximum SPL is 123 dB (ActiveGard off) and headphone frequency response is 60 Hz–25 kHz. Passive ambient noise attenuation is up to 32 dB from the closed earcup construction. The headband padding design is pressure-sensitive for comfort during long wearing sessions. The boom microphone can be worn on either right or left side. Compatible with Sennheiser Cable 26-II series (sold separately). Cables of the Cable 26-II series are interchangeable via the modular connector system.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eActiveGard Hearing Protection\u003c\/strong\u003e — Switchable three-setting attenuation (off \/ 95 dB \/ 110 dB) protects against sudden audio bursts above 110 dB.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoiseGard Active Noise Compensation\u003c\/strong\u003e — Active noise reduction supplements the passive attenuation of the closed circumaural earcup construction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupercardioid Dynamic Boom Microphone\u003c\/strong\u003e — Noise-compensated supercardioid dynamic mic delivers clear voice communication in high-ambient-noise environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60 Hz–25 kHz Headphone Frequency Response\u003c\/strong\u003e — Wide bandwidth for accurate reproduction of program audio and IFB feeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 32 dB Passive Noise Attenuation\u003c\/strong\u003e — Closed circumaural earcup construction isolates from ambient noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e123 dB Max SPL (ActiveGard Off)\u003c\/strong\u003e — High headphone output capability for loud broadcast monitoring environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoom Wearable Left or Right\u003c\/strong\u003e — Microphone boom configurable for either side without tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular Cable System\u003c\/strong\u003e — Compatible with Sennheiser Cable 26-II series; cables sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure-Sensitive Headband Padding\u003c\/strong\u003e — Comfortable design for extended broadcast session use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBroadcast studio production and monitoring headset\u003c\/li\u003e\n\u003cli\u003eOutside broadcast (OB) and ENG headset\u003c\/li\u003e\n\u003cli\u003eLive event production floor communications\u003c\/li\u003e\n\u003cli\u003eBackstage and intercom communications in high-SPL environments\u003c\/li\u003e\n\u003cli\u003eGovernment and institutional broadcast communications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f5f5f5\"\u003e\n\u003cth style=\"text-align:left;padding:8px;border:1px solid #ddd\"\u003eParameter\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px;border:1px solid #ddd\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eSKU\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003e700324\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eConfiguration\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eClosed circumaural, dual-sided\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eHeadphone Frequency Response\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003e60 Hz – 25 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eMax SPL (ActiveGard Off)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003e123 dB SPL @ 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003ePassive Noise Attenuation\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eUp to 32 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eHearing Protection\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eActiveGard: off \/ 95 dB \/ 110 dB (switchable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eNoise Compensation\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eNoiseGard active noise compensation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eMicrophone Type\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eDynamic, supercardioid (noise-compensated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eMicrophone Frequency Response\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eOptimized for speech intelligibility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eCable\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd\"\u003eNot included (Cable 26-II series compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat cable is required for this headset?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe HMD 300 PRO NoiseGard uses Sennheiser’s Cable 26-II series, sold separately. Multiple connector configurations are available to match studio, intercom, and field equipment.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the difference between ActiveGard and NoiseGard?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eActiveGard is a switchable limiter that prevents sudden audio bursts above a set threshold from reaching the listener at harmful levels. NoiseGard is active noise compensation that continuously reduces steady-state ambient noise from the environment.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan the microphone boom be configured for left or right side?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The boom is configurable for either side without specialist tools.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eIs this headset compatible with intercom systems?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. When paired with appropriate Cable 26-II series cables, the HMD 300 PRO NoiseGard is compatible with standard broadcast intercom systems at 200 Ω impedance.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the warranty?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eStandard 2-year Sennheiser warranty.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"Sennheiser","offers":[{"title":"Default Title","offer_id":47711638520044,"sku":"700324","price":649.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/Zz1hMTY4MmRiOGU3Y2MxMWYwYjViMzc2OGVlOGU5N2FlYQ.png?v=1780783983","url":"https:\/\/creationnetworks.net\/products\/sennheiser-closed-circumaural-headset-activegard-limiting-technology-active-noise-compensation-noisegard-supercardioid-dynamic-microphone-cable-not-included-700324","provider":"Creation Networks","version":"1.0","type":"link"}