{"id":130266,"date":"2025-05-20T10:38:40","date_gmt":"2025-05-20T02:38:40","guid":{"rendered":"https:\/\/soundglory.com\/product\/audio-note-kassai-300b-monoblock-power-amplifier\/"},"modified":"2025-05-20T10:38:40","modified_gmt":"2025-05-20T02:38:40","slug":"audio-note-kassai-300b-monoblock-power-amplifier","status":"publish","type":"product","link":"https:\/\/soundglory.com\/en\/product\/audio-note-kassai-300b-monoblock-power-amplifier\/","title":{"rendered":"AUDIO NOTE <br\/>Kassai 300B Monoblock Power Amplifier"},"content":{"rendered":"<p>Audio Note (UK) Kassai mono power amplifier is a Pure Class A, single-ended tube amplifier utilizing the highly acclaimed 300B triode; its performance level is significantly superior to the vast majority of contemporary designs.<\/p>\n<p>They are designed specifically for sonic performance rather than technical specifications, and meet all Audio Note (UK) Level 4 standards:\u2014<\/p>\n<p>Pure Class A operation<\/p>\n<p>Zero negative feedback<\/p>\n<p>Single-ended output stage<\/p>\n<p>Vacuum tube rectification<\/p>\n<p>Directly heated triode operation<\/p>\n<p>Quality of materials and parts<\/p>\n<p>Each amplifier is entirely hand-assembled and equipped with the following components: &#8211;<\/p>\n<p>Audio Note (UK) custom output transformers featuring copper primary windings, Audio Note (UK) silver secondary windings, and AN (UK) UHiB double C-cores.<\/p>\n<p>Audio Note (UK) Custom 1-Watt Tantalum Resistor<\/p>\n<p>Audio Note (UK) Copper Foil Capacitors<\/p>\n<p>Audio Note (UK) pure silver internal wiring<\/p>\n<p>Black Gate capacitors in critical areas<\/p>\n<p>Each KASSAI Balanced amplifier is equipped with input and output transformers that are unrivaled in design, quality, and performance within this price range in the realm of audio reproduction.<\/p>\n<p>Balanced\/XLR input transformers are hand-wound by Audio Note (UK) and feature copper primaries and silver secondaries. Utilizing the highest quality core materials, they provide an optimal signal path from the preamplifier.<\/p>\n<p>Output transformers are specified similarly, featuring copper primaries and silver secondaries. The cores utilize our proprietary Double C design and are manufactured from our own UHiB material. Unsurprisingly, they are custom-designed and manufactured in-house in the UK.<\/p>\n<p>As one would expect from Audio Note (UK) Level 4 products, each amplifier features valve rectification provided by a selected 5U4GB valve.<\/p>\n<h2>Technical specifications<\/h2>\n<p>Input impedance: 100k\u03a9 \/ 600\u03a9 (balanced version)<\/p>\n<p>Input sensitivity: 250mV (Standard) \/ 3.15V (Low Gain) \/ 1.6V (Balanced)<\/p>\n<p>Maximum output: 18 watts RMS per channel (4 or 8-ohm load)<\/p>\n<p>Maximum output: 8 watts per channel (approx.) into a 4- or 8-ohm load.<\/p>\n<p>Vacuum tubes: 2 x 6SN7 (1 per chassis)<\/p>\n<p>4 x 300B (2 per chassis)<\/p>\n<p>2 x 5U4GB (1 per chassis)<\/p>\n<p>Unit weight: 20 kg (per amplifier)<\/p>\n<p>Unit dimensions: 195 mm (H) x 205 mm (W) x 500 mm (D) (per amplifier)<\/p>\n<p>Power Input: AC 100-120V \/ 220-240V, 50\/60Hz<\/p>\n<p>Maximum power consumption: 200 W<\/p>\n<p>Note: Due to Audio Note (UK)&#8217;s ongoing research and development program, specifications are subject to change without notice.<\/p>\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\/audio-note-kassai-300b-monoblock-power-amplifier\/\"><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Audio Note (UK) Kassai mono power amplifier is a Pure Class A, single-ended tube amplifier utilizing the highly acclaimed 300B triode; its performance level is&#8230;<\/p>\n","protected":false},"featured_media":118353,"template":"","meta":[],"pwb-brand":[9841],"product_cat":[10162,11113],"product_tag":[],"class_list":{"0":"post-130266","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"pwb-brand-audio-note","7":"product_cat-post-amplifier","8":"product_cat-audio-note-post-amplifier","9":"product_shipping_class-c-class","11":"first","12":"instock","13":"shipping-taxable","14":"product-type-simple"},"aioseo_notices":[],"etheme_brands":{"errors":{"invalid_taxonomy":["Invalid taxonomy."]},"error_data":[]},"brands":[{"id":9841,"name":"AUDIO NOTE","slug":"audio-note"}],"_links":{"self":[{"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/product\/130266","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":0,"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/product\/130266\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/media\/118353"}],"wp:attachment":[{"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/media?parent=130266"}],"wp:term":[{"taxonomy":"pwb-brand","embeddable":true,"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/pwb-brand?post=130266"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/product_cat?post=130266"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/soundglory.com\/en\/wp-json\/wp\/v2\/product_tag?post=130266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}