{"id":6524,"date":"2026-07-28T02:14:29","date_gmt":"2026-07-28T02:14:29","guid":{"rendered":"https:\/\/baflesoviedo.com\/home\/?post_type=product&#038;p=6524"},"modified":"2026-07-28T02:19:18","modified_gmt":"2026-07-28T02:19:18","slug":"audio-research-i-55-amplificador-integrado","status":"publish","type":"product","link":"https:\/\/baflesoviedo.com\/home\/product\/audio-research-i-55-amplificador-integrado\/","title":{"rendered":"Audio Research, I\/55, Amplificador Integrado"},"content":{"rendered":"<p>&nbsp;<\/p>\n<h6><b>TECHNICAL SPECIFICATIONS<\/b><\/h6>\n<table>\n<tbody>\n<tr>\n<td><span style=\"font-weight: 400;\">Power Output<\/span><\/td>\n<td><span style=\"font-weight: 400;\">50 watts continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% per channel, below 0.1% at 1 watt (Note that actual power output is dependent upon both line voltage and \u201ccondition\u201d i.e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not critical)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Power Bandwidth<\/span><\/td>\n<td><span style=\"font-weight: 400;\"> (-3dB points) 10Hz to 22kHz<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Frequency Response<\/span><\/td>\n<td><span style=\"font-weight: 400;\"> (-3dB points at 1 watt) 7Hz to 30kHz<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Input Sensitivity<\/span><\/td>\n<td><span style=\"font-weight: 400;\">1.25V RMS for rated output<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Input Impedance<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100K ohms Balanced, 48K ohms Single Ended<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Output Polarity<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Non-inverting. Balanced input pin 2+ (IEC-268)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Input Impedance<\/span><\/td>\n<td><span style=\"font-weight: 400;\">100K ohms Balanced, 50K ohms SE<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">8 Inputs \u2013 4 balanced, 4 single-ended<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Output Taps<\/span><\/td>\n<td><span style=\"font-weight: 400;\">8 ohms, 4 ohms<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Power Requirements<\/span><\/td>\n<td><span style=\"font-weight: 400;\">105-130VAC 60Hz (210-250VAC 50Hz) 252 watts at rated output<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Tube Required<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2 matched pairs 6550WE; 3 x 6922 (1 input, 2 driver)<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Dimensions<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Width 16.5\u201d (42 cm)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Height 7.25\u201d (18 cm)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Depth 13.5\u201d (34 cm)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Weight: 40 lbs (18.1 kg); 51 lbs (23.1kg) shipping weight<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/audioresearch.com\/new_website\/audio-research-i-55-integrated-amplifier\/\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"color: #0000ff;\">Click aqu\u00ed para m\u00e1s informaci\u00f3n del producto.<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><span style=\"font-weight: 400;\">*Cont\u00e1ctenos para obtener el precio.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">El I\/55 ha sido dise\u00f1ado para reunir la reconocida musicalidad de Audio Research en un amplificador integrado a v\u00e1lvulas compacto, vers\u00e1til y de extraordinario rendimiento. Basado en los avances desarrollados para el I\/70, incorpora una arquitectura \u00edntegramente a v\u00e1lvulas, un preamplificador activo y un sistema Auto Bias que garantizan una reproducci\u00f3n din\u00e1mica, transparente y llena de riqueza arm\u00f3nica. Su dise\u00f1o ampliable y su cuidada construcci\u00f3n artesanal lo convierten en una soluci\u00f3n ideal para disfrutar de la alta fidelidad sin concesiones.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Caracter\u00edsticas principales:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Amplificador integrado a v\u00e1lvulas de 50 W por canal, equipado con cuatro v\u00e1lvulas 6550WE y tres v\u00e1lvulas 6922, que ofrece un sonido potente, refinado y de gran naturalidad.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Sistema Auto Bias, que ajusta autom\u00e1ticamente la polarizaci\u00f3n de las v\u00e1lvulas de salida para mantener un rendimiento \u00f3ptimo y prolongar su vida \u00fatil sin necesidad de ajustes manuales.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Preamplificador activo independiente, con salidas de previo para subwoofers o etapas de potencia externas y una salida para aud\u00edfonos alimentada directamente por las v\u00e1lvulas de salida, dise\u00f1ada para una experiencia de escucha de m\u00e1xima calidad.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Conectividad vers\u00e1til y ampliable, con tres entradas RCA, una entrada XLR balanceada y la posibilidad de incorporar m\u00f3dulos opcionales DAC (USB, \u00f3ptica, coaxial y Bluetooth) y phono MM\/MC.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Pantallas LexieTubes\u00ae para visualizar el volumen y la entrada seleccionada, junto con una construcci\u00f3n artesanal en Estados Unidos y una respuesta en frecuencia de 7 Hz a 30 kHz, que reflejan el cuidado y la calidad caracter\u00edsticos de Audio Research.<\/span><\/li>\n<\/ul>\n","protected":false},"featured_media":6525,"template":"","meta":[],"product_cat":[20,15],"product_tag":[214,132,185],"_links":{"self":[{"href":"https:\/\/baflesoviedo.com\/home\/wp-json\/wp\/v2\/product\/6524"}],"collection":[{"href":"https:\/\/baflesoviedo.com\/home\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/baflesoviedo.com\/home\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/baflesoviedo.com\/home\/wp-json\/wp\/v2\/media\/6525"}],"wp:attachment":[{"href":"https:\/\/baflesoviedo.com\/home\/wp-json\/wp\/v2\/media?parent=6524"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/baflesoviedo.com\/home\/wp-json\/wp\/v2\/product_cat?post=6524"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/baflesoviedo.com\/home\/wp-json\/wp\/v2\/product_tag?post=6524"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}