{"id":95351,"date":"2025-06-03T07:07:04","date_gmt":"2025-06-03T07:07:04","guid":{"rendered":"https:\/\/soundglory.com\/?post_type=product&#038;p=95351"},"modified":"2026-05-22T16:01:15","modified_gmt":"2026-05-22T08:01:15","slug":"kr-audio-300b-balloon","status":"publish","type":"product","link":"https:\/\/soundglory.com\/en\/product\/kr-audio-300b-balloon\/","title":{"rendered":"\u6377\u514b KR AUDIO <br>300B BALLOON \u771f\u7a7a\u7ba1"},"content":{"rendered":"<h3>300B BALLOON<\/h3>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Maximum Plate Voltage<\/td>\n<td>550 V<\/td>\n<\/tr>\n<tr>\n<td>Maximum Plate Current<\/td>\n<td>120 mA<\/td>\n<\/tr>\n<tr>\n<td>Plate Dissipation<\/td>\n<td>50 Watts<\/td>\n<\/tr>\n<tr>\n<td>Va<\/td>\n<td>450 V<\/td>\n<\/tr>\n<tr>\n<td>Ia<\/td>\n<td>100 mA<\/td>\n<\/tr>\n<tr>\n<td>Vg<\/td>\n<td>-90 V<\/td>\n<\/tr>\n<tr>\n<td>Transconductance<\/td>\n<td>6.2 mA\/V<\/td>\n<\/tr>\n<tr>\n<td>Amplification Factor<\/td>\n<td>3.9<\/td>\n<\/tr>\n<tr>\n<td>Filament Voltage<\/td>\n<td>5 V (DC\/AC)<\/td>\n<\/tr>\n<tr>\n<td>Filament Current<\/td>\n<td>1.2 A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div style=\"margin: 20px 0;\"><div class=\"qrcswholewtapper\" style=\"text-align:left;\"><div class=\"qrcprowrapper\"  id=\"qrcwraa2leds\"><div class=\"qrc_canvass\" id=\"qrc_cuttenpages_2\" style=\"display:inline-block\" data-text=\"https:\/\/soundglory.com\/en\/product\/kr-audio-300b-balloon\/\"><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>300B BALLOON Maximum Plate Voltage 550 V Maximum Plate Current 120 mA Plate Dissipation 50 Watts Va 450 V Ia 100 mA Vg -90 V&#8230;<\/p>\n","protected":false},"featured_media":95393,"template":"","meta":[],"pwb-brand":[106],"product_cat":[108,496],"product_tag":[],"class_list":{"0":"post-95351","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"pwb-brand-kr-audio","7":"product_cat-kr-audio-vacuum-tube","8":"product_cat-power-tube","9":"product_shipping_class-b-class","11":"first","12":"instock","13":"shipping-taxable","14":"purchasable","15":"product-type-variable","16":"wvs-archive-product-wrapper"},"aioseo_notices":[],"etheme_brands":{"errors":{"invalid_taxonomy":["Invalid taxonomy."]},"error_data":[]},"brands":[{"id":106,"name":"KR AUDIO","slug":"kr-audio"}],"_links":{"self":[{"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/product\/95351","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":4,"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/product\/95351\/revisions"}],"predecessor-version":[{"id":126654,"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/product\/95351\/revisions\/126654"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/media\/95393"}],"wp:attachment":[{"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/media?parent=95351"}],"wp:term":[{"taxonomy":"pwb-brand","embeddable":true,"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/pwb-brand?post=95351"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/product_cat?post=95351"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/product_tag?post=95351"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}