{"id":15282,"date":"2020-05-20T14:14:59","date_gmt":"2020-05-20T14:14:59","guid":{"rendered":"https:\/\/masteringmansion.com\/pro-audio\/?post_type=product&#038;p=15282"},"modified":"2026-06-24T12:18:46","modified_gmt":"2026-06-24T12:18:46","slug":"u2379-junior-tube-distortion-amplifier-proximamente-disponible","status":"publish","type":"product","link":"https:\/\/masteringmansion.com\/pro-audio\/categorias\/cableado-patchbays-y-accesorios\/u2379-junior-tube-distortion-amplifier-proximamente-disponible\/","title":{"rendered":"U2379 Junior tube distortion amplifier &#8211; Proximamente disponible"},"content":{"rendered":"<p>With the tube distortion \u00abU2379\u00bb roger schult german audio lab introduces a mono-sound-design-tool, which uses the specific sound characteristics of different tube circuits in combination with coil filters in an unprecedented way.<\/p>\n<p><b>Overview<\/b><br \/>\nThe circuit of the distortion splits into three stages:<\/p>\n<p><b>\u00abfirst gain station\u00bb<\/b> with \u00abinput selector\u00bb for adjusting the input signal and \u00aboutput selector\u00bb for shaping the audio signal.<\/p>\n<p><b>\u00abdynamic distortion stage\u00bb<\/b> &#8211; the heart of distortion with \u00abbias\u00bb and \u00abgain\u00bb for distortion range and \u00abresonant charging frequency\u00bb and \u00abswinging choke resonant + width\u00bb to design the sound.<\/p>\n<p><b>\u00aboutput stage driver\u00bb<\/b> as impedance converter with rotary switch for the \u00aboutput\u00bb plus a tone control \u00abhight pass inductor\u00bb for damping the overdriven height components.<\/p>\n<p>To start up the distortion, the functional unit \u00aboperating condition\u00bb is used by means of two buttons: \u00abignition\u00bb for starting and \u00abbreak\u00bb for interrupting the mains voltage. A slide switch can be used to select between \u00abon\u00bb and \u00abbypass\u00bb function. The \u00abstandby\u00bb position protects the tubes and interrupts the operation.<\/p>\n<p><b>Functional description<\/b><br \/>\nThe distortion circuit is based on three tubes, which are used for the input stage, for the distortion unit and as an impedance converter in the output. In the input section, a double triode is used, so the input gain can be switched in four stages. With the additional 5-stage switch, different connections of the two triodes can be selected, in which five different tonal coloraturas are already provided at this point.<\/p>\n<p>For the distortion, a variable-mu &#8211; penthode is used whose properties are very similar to a variable mu compressor circuit. The distortion comes about with the input level \u00abgain\u00bb on the one hand and via the \u00abbias\u00bb &#8211; ie the bias of the tube &#8211; on the other hand. Both parameters can be controlled by means of 12-stage ELMA switches. Furthermore a nine-stage ELMA rotary switch allows the selection of different coil networks, which act as resonators and thus directly affect the overdriving of the tube, and in the second coil network a quality control (\u00abwidth\u00bb) is involved . In practice this is achieved by distorting certain selectable frequencies earlier than others.<\/p>\n<p>In addition to the obligatory level control, the output stage offers another rotary switch, behind which a filter module is concealed., which is also realized with a coil-based so-called hi-pass inductor circuit, This filter makes it possible to lower nine selectable frequencies of the upper middle range steeply. It can comfortably dampen the aggressive artifacts of the distortion stage without causing an undifferentiated sound image.<\/p>\n<p>Overall, with these control options a hitherho unknown variety of sound results.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Coilerizer &#8211; tube distortion amplifer, coming soon<\/p>\n","protected":false},"featured_media":15281,"template":"","meta":[],"pwb-brand":[190],"product_brand":[],"product_cat":[1025],"product_tag":[524],"class_list":["post-15282","product","type-product","status-publish","has-post-thumbnail","pwb-brand-roger-schult","product_cat-cableado-patchbays-y-accesorios","product_tag-roger-schult","first","onbackorder","taxable","shipping-taxable","product-type-simple"],"brands":[{"id":190,"name":"ROGER SCHULT","slug":"roger-schult"}],"_links":{"self":[{"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/product\/15282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/media\/15281"}],"wp:attachment":[{"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/media?parent=15282"}],"wp:term":[{"taxonomy":"pwb-brand","embeddable":true,"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/pwb-brand?post=15282"},{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/product_brand?post=15282"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/product_cat?post=15282"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/masteringmansion.com\/pro-audio\/wp-json\/wp\/v2\/product_tag?post=15282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}