{"title":"Ear Simulator \u0026 Test Fixture","description":"\u003cp\u003eEar simulators, couplers and test fixtures for measuring headphones, earphones, hearing protectors and hearing aids to IEC 60318 and ANSI S3.7. At \u003cstrong\u003eNP Lab\u003c\/strong\u003e we supply \u003cstrong\u003eGRAS\u003c\/strong\u003e ear simulator kits, ear and cheek simulators, and headphone \/ hearing-protector test fixtures.\u003c\/p\u003e","products":[{"product_id":"gras-43ag","title":"43AG Ear \u0026 Cheek Simulator","description":"\u003ch1 class=\"h3\"\u003e43AG Ear \u0026amp; Cheek Simulator\u003c\/h1\u003e\n\u003cdiv class=\"p\"\u003e\n\u003cp\u003eThe GRAS 43AG Ear and Cheek Simulator represents the section of a head most important for realistic reproduction of the acoustic properties of the ear of an average human head. It allows the use of an ITU-T type 3.3 pinna or an Anthropometric Pinna, either with an IEC 60318-4 Ear Simulator, a Low-Noise Ear Simulator system, a High-Frequency Ear Simulator or a Hi-Res Ear Simulator.\u003c\/p\u003e\n\u003cp\u003eThe GRAS 43AG Ear and Cheek Simulator is a unique, multi-faceted and multi-purpose tool that helps you accomplish the job effectively. We call it the table-top KEMAR as it offers you much of the KEMAR capability in a convenient and portable package.\u003c\/p\u003e\n\u003cp\u003eOur vision for the 43AG is to assist you in all facets of the product development cycle: From R\u0026amp;D testing to the final test and approval of the finished product. As your product is put together, your team needs to ensure that individual changes do not conflict with your overall vision. Much of this validation work can be accomplished at their desks, in real-time, making you comfortable and giving you the stamp of approval of the final product.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"h4\"\u003eKey Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTheoretical dynamic range lower limit with GRAS preamplifier\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e25 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTheoretical dynamic range upper limit with GRAS preamplifier @ +28 V \/ ±14 V power supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e153 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTheoretical dynamic range upper limit with GRAS preamplifier @ +120 V \/ ±60 V power supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e164 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eSet sensitivity @ 250 Hz (±2 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e12.5 mV\/Pa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eSet sensitivity @ 250 Hz  (±2 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e-38.1 dB re 1V\/Pa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eCoupler volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e1260 @ 500 Hz mm³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eResonance frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e13.5 (ear sim) kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTemperature range, operation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e-30 to 60 °C \/ -22 to 140 °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTemperature coefficient @250 Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e- 0.01 dB\/°C \/ -0.006 dB\/°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eHumidity range  non condensing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e0 to 75 % RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eANSI standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003eS3.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eIEC standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e60318-4 (former 60711)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e1.95 kg g \/ 68.784 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003eSpecifications from the official GRAS product sheet. Please refer to the attached datasheet for full details.\u003c\/em\u003e\u003c\/p\u003e","brand":"GRAS","offers":[{"title":"Default Title","offer_id":54036783628582,"sku":"43AG","price":0.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/9797\/0214\/files\/43ag_web-2.jpg?v=1791344475"},{"product_id":"gras-43ac-s1","title":"43AC-S1 CCP Ear Simulator Kit According to IEC 60318-4","description":"\u003ch1 class=\"h3\"\u003e43AC-S1 CCP Ear Simulator Kit According to IEC 60318-4\u003c\/h1\u003e\n\u003cdiv class=\"p\"\u003e\n\u003cp\u003eThe GRAS 43AC-S1 CCP Ear Simulator Kit according to IEC 60318-4 with TEDS is a complete test-jig for acoustical measurements on earphones coupled to the ear by inserts such as tubes and ear moulds.\u003c\/p\u003e\n\u003cp\u003eThe GRAS 43AC-S1 is a complete test jig for acoustically testing earphones coupled to the ear via inserts such as tubes and ear moulds and complies with the following international requirements:\u003c\/p\u003e\n\u003cp\u003eThe Test Jig has an adjustable spring-loaded arm to exert a variable force on the test object. Click GRAS RA0045-S1 for more information about the RA0045-S1 Ear Simulator.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"h4\"\u003eKey Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTheoretical dynamic range lower limit with GRAS preamplifier\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e25 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTheoretical dynamic range upper limit with GRAS CCP preamplifier\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e150 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eSet sensitivity @ 250 Hz (±2 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e12 mV\/Pa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eSet sensitivity @ 250 Hz  (±2 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e-38.5 dB re 1V\/Pa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eCoupler volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e1260 @ 500 Hz mm³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eResonance frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e13.5 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTemperature range, operation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e- 30 to 60 °C \/ -22 to 140 °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTemperature coefficient @250 Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e- 0.01 dB\/°C \/ -0.006 dB\/°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eHumidity range  non condensing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e0 to 75 % RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eANSI standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003eS3.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eIEC standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e60318-4 (former 60711)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eConnector type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003eMicrodot 10\/32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e1.55 g \/ 54.675 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003eSpecifications from the official GRAS product sheet. Please refer to the attached datasheet for full details.\u003c\/em\u003e\u003c\/p\u003e","brand":"GRAS","offers":[{"title":"Default Title","offer_id":54036787724582,"sku":"43AC-S1","price":0.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/9797\/0214\/files\/43ac_pdfgen_hires200dpi_1.jpg?v=1791344483"},{"product_id":"gras-43ac-s5","title":"43AC-S5 High-Frequency Ear Simulator Kit CCP","description":"\u003ch1 class=\"h3\"\u003e43AC-S5 High-Frequency Ear Simulator Kit CCP\u003c\/h1\u003e\n\u003cdiv class=\"p\"\u003e\n\u003cp\u003eThe GRAS 43AC-S5 Ear Simulator Kit with TEDS is a complete test-jig for high-frequency measurements up to 20 kHz on earphones coupled to the ear by inserts such as tubes and ear moulds.\u003c\/p\u003e\n\u003cp\u003eThe GRAS 43AC-S5 Ear Simulator Kit is a complete test jig for acoustically testing earphones coupled to the ear via inserts such as tubes and ear moulds and complies with the following international requirements:\u003c\/p\u003e\n\u003cp\u003e43AC-S5 uses the RA0402 High Resolution Ear Simulator which extends the useful frequency range to 20 kHz. Read more abot the RA0402 here .\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"h4\"\u003eKey Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTheoretical dynamic range lower limit with GRAS preamplifier\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e25 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTheoretical dynamic range upper limit with GRAS preamplifier @ +28 V \/ ±14 V power supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e153 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eSet sensitivity @ 250 Hz (±2 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e12 mV\/Pa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eSet sensitivity @ 250 Hz  (±2 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e-38.5 dB re 1V\/Pa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eCoupler volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e1260 @ 500 Hz mm³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eResonance frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e13.5 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTemperature range, operation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e-30 to 60 °C \/ -22 to 140 °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTemperature coefficient @250 Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e-0.01 dB\/°C \/ -0.006 dB\/°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eHumidity range  non condensing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e0 to 75 % RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eANSI standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003eS3.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eIEC standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e60318-4 (former 60711)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eConnector type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003eMicrodot 10\/32\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e1550 g \/ 54.675 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003eSpecifications from the official GRAS product sheet. Please refer to the attached datasheet for full details.\u003c\/em\u003e\u003c\/p\u003e","brand":"GRAS","offers":[{"title":"Default Title","offer_id":54036787921190,"sku":"43AC-S5","price":0.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/9797\/0214\/files\/43ac_web.jpg?v=1791344489"},{"product_id":"gras-43aa-s2","title":"43AA-S2 CCP Ear Simulator Kit According to IEC 60318-1 \u0026 -2","description":"\u003ch1 class=\"h3\"\u003e43AA-S2 CCP Ear Simulator Kit According to IEC 60318-1 \u0026amp; -2\u003c\/h1\u003e\n\u003cdiv class=\"p\"\u003e\n\u003cp\u003eThe GRAS 43AA-S2 CCP Ear Simulator Kit with TEDSis a complete test jig for acoustical measurements on telephone handsets and earphones. It includes an IEC 60318 Ear Simulator RA0039 which is individually calibrated according to the ITU-T Recommendation P.57 (08\/96) ”Series P: Telephone transmission quality, objective measuring apparatus: artificial ears.\u003c\/p\u003e\n\u003cp\u003eThe GRAS 43AA-S2 CCP Ear Simulator Kit according to IEC 60318-1 \u0026amp; -2 is a complete test jig for acoustical measurements on telephone handsets and earphones in accordance with:\u003c\/p\u003e\n\u003cp\u003eThe Test Jig has an adjustable spring-loaded arm to exert a variable force on the test object.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"h4\"\u003eKey Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTheoretical dynamic range lower limit with GRAS preamplifier\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e25 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTheoretical dynamic range upper limit with GRAS CCP preamplifier\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e150 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eSet sensitivity @ 250 Hz (±3 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e12 mV\/Pa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eSet sensitivity @ 250 Hz (±3 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e-38.5 dB re 1V\/Pa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTemperature range, operation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e- 30 to 60 °C \/ -22 to 140 °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTemperature coefficient @250 Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e- 0.01 dB\/°C \/ -0.006 dB\/°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eHumidity range  non condensing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e0 to 80 % RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eANSI standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003eS3.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eITU-T recommendations\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003eP.57 Type 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eConnector type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003eBNC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e1.65 g \/ 58.202 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003eSpecifications from the official GRAS product sheet. Please refer to the attached datasheet for full details.\u003c\/em\u003e\u003c\/p\u003e","brand":"GRAS","offers":[{"title":"Default Title","offer_id":54036788150566,"sku":"43AA-S2","price":0.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/9797\/0214\/files\/43aa_web.jpg?v=1791344495"},{"product_id":"gras-ra0045-s1","title":"RA0045-S1 Prepolarized Ear Simulator According to IEC 60318-4 (60711)","description":"\u003ch1 class=\"h3\"\u003eRA0045-S1 Prepolarized Ear Simulator According to IEC 60318-4 (60711)\u003c\/h1\u003e\n\u003cdiv class=\"p\"\u003e\n\u003cp\u003eGRAS RA0045-S1 is an ear simulator with an acoustic input impedance closely resembling that of an average human ear. The RA0045 includes a 40AO 1\/2\" prepolarized pressure microphon and each RA0045 is individually calibrated with this specific microphone.\u003c\/p\u003e\n\u003cp\u003eThe RA0045-S1 Prepolarized Ear Simulator is for making acoustic measurements on earphones coupled to the human ear by ear inserts such as tubes, ear moulds, or ear tips. The acoustic input impedance of RA0045-S1 closely resembles that of the human ear and, as a result, loads a sound source in very much the same way.\u003c\/p\u003e\n\u003cp\u003eThe RA0045-S1 complies with the following international requirements:\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"h4\"\u003eKey Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003ePolarization\/Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e0 V \/ CCP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTheoretical dynamic range lower limit with GRAS preamplifier\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e25 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eDynamic range upper limit with GRAS preamplifier\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e150 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eSet sensitivity @ 250 Hz (±3 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e12.5 mV\/Pa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eSet sensitivity @ 250 Hz (±3 dB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e-38 dB re 1V\/Pa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eResonance frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e13.5 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eCoupler volume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e1260 @ 500 Hz mm³\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTemperature range, operation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e-30 to 60 °C \/ -22 to 140 °F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eTemperature coefficient @250 Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e0.05 dB\/°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eHumidity range  non condensing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e0 to 90 % RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eANSI standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003eS3.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eIEC standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e60318-4 (former 60711)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eITU-T recommendations\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003eP.57\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e52 g \/ 1.8 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003eSpecifications from the official GRAS product sheet. Please refer to the attached datasheet for full details.\u003c\/em\u003e\u003c\/p\u003e","brand":"GRAS","offers":[{"title":"Default Title","offer_id":54036788412710,"sku":"RA0045-S1","price":0.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/9797\/0214\/files\/ra0045_blue_1.jpg?v=1791344503"},{"product_id":"gras-45ca","title":"45CA Headphone\/Hearing-protector Test Fixture","description":"\u003ch1 class=\"h3\"\u003e45CA Headphone\/Hearing-protector Test Fixture\u003c\/h1\u003e\n\u003cdiv class=\"p\"\u003e\n\u003cp\u003eThe GRAS 45CA is a versatile test fixture for measuring sound isolation of hearing-protectors according to ISO 4869-3 and ear- and headphones according to IEC60318-1 or 60318-4. For testing hearing-protectors according to ANSI\/ASA S12.42, choose GRAS 45CB.\u003c\/p\u003e\n\u003cp\u003eGRAS 45CA provides the basis for reliable and exact measurements and is designed with\u003c\/p\u003e\n\u003cp\u003eThe 45CA’s robust design is ideally suited for binaural testing of active and passive earplugs, as well as circumaural hearing protectors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"h4\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eISO 4869-3, IEC 60318-1 and IEC 60318-4 compliant, depending on configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"h4\"\u003eKey Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eIEC standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003eDep. on conf.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eITU-T recommendations\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003eP.380\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;\"\u003e11.6 k g \/ 409.18 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003eSpecifications from the official GRAS product sheet. Please refer to the attached datasheet for full details.\u003c\/em\u003e\u003c\/p\u003e","brand":"GRAS","offers":[{"title":"Default Title","offer_id":54036788740390,"sku":"45CA","price":0.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/9797\/0214\/files\/45CA_HiRes_2020_webcrop.jpg?v=1791344514"},{"product_id":"gras-45cc","title":"45CC Headphone Test Fixture","description":"\u003ch1 class=\"h3\"\u003e45CC Headphone Test Fixture\u003c\/h1\u003e\n\u003cdiv class=\"p\"\u003e\n\u003cp\u003e45CC with TEDS is a flexible and configurable platform for dual-channel testing of headphones and headsets. It has multiple configuration options: microphones, IEC 60318-1 and IEC 60318-4 ear simulators, anthropometric pinnae and optional ITU-T P.51 mouth simulator. It can be adjusted very precisely to support different headphone\/headset designs and sizes for high accuracy and repeatability. It is well suited for Research and Development, Production Engineering, Quality Control and Production Line testing.\u003c\/p\u003e\n\u003cp\u003eThe GRAS 45CC Headphone Test Fixture is for dual-channel testing of headphones and headsets and is built on our vast experience in the field. With a focus on multiple configuration options and accurate, reproducible, and repeatable test results, the test fixture can easily be adapted to many different headphone\/headset designs and sizes.\u003c\/p\u003e\n\u003cp\u003eDual-channel testing of headphones and headsets, from 3.15 Hz to 70 kHz\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 class=\"h4\"\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIEC 60318-1 and IEC 60318-4 ear simulator options\u003c\/li\u003e\n\u003cli\u003eHuman-like pinna\u003c\/li\u003e\n\u003cli\u003eEasy in situ calibration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eSpecifications from the official GRAS product sheet. Please refer to the attached datasheet for full details.\u003c\/em\u003e\u003c\/p\u003e","brand":"GRAS","offers":[{"title":"Default Title","offer_id":54036789002534,"sku":"45CC","price":0.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/9797\/0214\/files\/45cc_a_hires_rgb_resized.jpg?v=1791344698"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/9797\/0214\/collections\/ear-simulator-test-fixture.jpg?v=1791345704","url":"https:\/\/nplab.shop\/collections\/ear-simulator-test-fixture.oembed","provider":"NP LAB","version":"1.0","type":"link"}