{"id":3545,"date":"2025-01-01T09:40:39","date_gmt":"2025-01-01T09:40:39","guid":{"rendered":"https:\/\/medsailfar.com\/?post_type=product&p=3545"},"modified":"2026-01-25T23:56:36","modified_gmt":"2026-01-25T15:56:36","slug":"medsailfar-professional-analog-batteries-bte-ear-sound-amplifier-hearing-aid-amplifier-with-battery","status":"publish","type":"product","link":"https:\/\/medsailfar.com\/index.php\/product\/medsailfar-professional-analog-batteries-bte-ear-sound-amplifier-hearing-aid-amplifier-with-battery\/","title":{"rendered":"Medsailfar Professional Analog Batteries BTE Ear Sound Amplifier Hearing Aid Amplifier With Battery"},"content":{"rendered":"

Medsailfar Professional Analog Batteries BTE Ear Sound Amplifier Hearing Aid Amplifier With Battery<\/strong><\/h3>\n

 <\/p>\n

\"\" \"\" \"\"<\/p>\n

Descriptions<\/strong><\/h3>\n

1.Ergonomic fit behind the ear,barely visible<\/strong>
\n2.Amplifies the volume of all sounds indoors and outdoors 3.Classicand Reliable\u2014Classic Design &VC Control<\/strong>
\n4.Knowles Microphone<\/strong>
\n5.Single ear use,suitable for left or right ear<\/strong><\/p>\n

 <\/p>\n

Specifications<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Model<\/strong><\/td>\nMSF3571<\/strong><\/td>\n<\/tr>\n
Operating Voltage<\/strong><\/td>\nDC 1.0~1.45V<\/strong><\/td>\n<\/tr>\n
Max-OSPL90<\/strong><\/td>\n\u2264126\u00b15 dB<\/strong><\/td>\n<\/tr>\n
HFA-SSPL90<\/strong><\/td>\n116 dB<\/strong><\/td>\n<\/tr>\n
Peak Gain<\/strong><\/td>\n40\u00b15 dB<\/strong><\/td>\n<\/tr>\n
The Full-on Average Gain Value(HFA Avg)<\/strong><\/td>\n29dB\u00b15dB<\/strong><\/td>\n<\/tr>\n
Equivalent Input Noise(EIN)<\/strong><\/td>\n32dB<\/strong><\/td>\n<\/tr>\n
Frequency Range<\/strong><\/td>\n500 Hz-3500 Hz<\/strong><\/td>\n<\/tr>\n
Total Harmonic Distortion<\/strong><\/td>\n\u22640.6%<\/strong><\/td>\n<\/tr>\n
Battery Curent<\/strong><\/td>\n3.4mA<\/strong><\/td>\n<\/tr>\n
Battery Type<\/strong><\/td>\nZinc-air battery<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Medsailfar Professional Analog Batteries BTE Ear Sound Amplifier Hearing Aid Amplifier With Battery   Descriptions 1.Ergonomic fit behind the ear,barely visible 2.Amplifies the volume of all sounds indoors and outdoors 3.Classicand Reliable\u2014Classic Design &VC Control 4.Knowles Microphone 5.Single ear use,suitable for left or right ear   Specifications Model MSF3571 Operating Voltage DC 1.0~1.45V Max-OSPL90 \u2264126\u00b15 […]<\/p>\n","protected":false},"featured_media":3548,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"product_cat":[117],"product_tag":[],"yoast_head":"\nMedsailfar Professional Analog Batteries BTE Ear Sound Amplifier Hearing Aid Amplifier With Battery - Shanghai Medsailfar Medical Instrument Co., Ltd.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/medsailfar.com\/index.php\/product\/medsailfar-professional-analog-batteries-bte-ear-sound-amplifier-hearing-aid-amplifier-with-battery\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Medsailfar Professional Analog Batteries BTE Ear Sound Amplifier Hearing Aid Amplifier With Battery - Shanghai Medsailfar Medical Instrument Co., Ltd.\" \/>\n<meta property=\"og:description\" content=\"Medsailfar Professional Analog Batteries BTE Ear Sound Amplifier Hearing Aid Amplifier With Battery   Descriptions 1.Ergonomic fit behind the ear,barely visible 2.Amplifies the volume of all sounds indoors and outdoors 3.Classicand Reliable\u2014Classic Design &VC Control 4.Knowles Microphone 5.Single ear use,suitable for left or right ear   Specifications Model MSF3571 Operating Voltage DC 1.0~1.45V Max-OSPL90 \u2264126\u00b15 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/medsailfar.com\/index.php\/product\/medsailfar-professional-analog-batteries-bte-ear-sound-amplifier-hearing-aid-amplifier-with-battery\/\" \/>\n<meta property=\"og:site_name\" content=\"Shanghai Medsailfar Medical Instrument Co., Ltd.\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-25T15:56:36+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/medsailfar.com\/wp-content\/uploads\/2025\/01\/3571-3.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/medsailfar.com\/index.php\/product\/medsailfar-professional-analog-batteries-bte-ear-sound-amplifier-hearing-aid-amplifier-with-battery\/\",\"url\":\"https:\/\/medsailfar.com\/index.php\/product\/medsailfar-professional-analog-batteries-bte-ear-sound-amplifier-hearing-aid-amplifier-with-battery\/\",\"name\":\"Medsailfar Professional Analog Batteries BTE Ear Sound Amplifier Hearing Aid Amplifier With Battery - 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