{"product_id":"cyrus-mono-x-300","title":"Cyrus Mono X 300 Power Amplifiers (Pair) - Pre-Owned","description":"\u003cstyle\u003e\n  .hb-tabs { margin: 18px 0; border: 1px solid rgba(0,0,0,0.12); border-radius: 10px; overflow: hidden; }\n  .hb-tabs input { display: none; }\n  .hb-tab-labels { display: flex; gap: 0; border-bottom: 1px solid rgba(0,0,0,0.12); background: rgba(0,0,0,0.03); }\n  .hb-tab-labels label {\n    flex: 1;\n    padding: 12px 14px;\n    cursor: pointer;\n    font-weight: 600;\n    text-align: center;\n    user-select: none;\n  }\n  .hb-panels { padding: 14px 16px; background: #fff; }\n  .hb-panel { display: none; }\n\n  #hb-monox300-tab-1:checked ~ .hb-tab-labels label[for=\"hb-monox300-tab-1\"],\n  #hb-monox300-tab-2:checked ~ .hb-tab-labels label[for=\"hb-monox300-tab-2\"] {\n    background: #fff;\n    border-bottom: 2px solid rgba(0,0,0,0.65);\n  }\n\n  #hb-monox300-tab-1:checked ~ .hb-panels #hb-monox300-panel-1,\n  #hb-monox300-tab-2:checked ~ .hb-panels #hb-monox300-panel-2 {\n    display: block;\n  }\n\n  .hb-panels h3 { margin: 18px 0 12px; font-size: 1.05em; }\n  .hb-panels p { margin: 20px 0 6px; }\n  .hb-panels ul { margin: 8px 0 20px 18px; }\n\u003c\/style\u003e\n\u003cdiv class=\"hb-tabs\"\u003e\n\u003cinput checked id=\"hb-monox300-tab-1\" name=\"hb-monox300-tabs\" type=\"radio\"\u003e \u003cinput id=\"hb-monox300-tab-2\" name=\"hb-monox300-tabs\" type=\"radio\"\u003e\n\u003cdiv class=\"hb-tab-labels\"\u003e\n\u003clabel for=\"hb-monox300-tab-1\"\u003eProduct Summary \u0026amp; Benefits\u003c\/label\u003e \u003clabel for=\"hb-monox300-tab-2\"\u003eTech Specs \u0026amp; Connectivity\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-panels\"\u003e\n\u003cdiv id=\"hb-monox300-panel-1\" class=\"hb-panel\"\u003e\n\u003ch3\u003eProduct Summary\u003c\/h3\u003e\n\u003cp\u003eRecently serviced by Cyrus with a 12 month warranty. Includes all boxing and accessories.\u003c\/p\u003e\n\u003cp\u003eThe Cyrus Mono X 300 is a high-performance monoblock power amplifier designed to combine substantial power and loudspeaker control with the compact proportions of Cyrus' classic half-width chassis. Supplied here as a pair, one amplifier powers each stereo channel for completely independent left and right channel amplification.\u003c\/p\u003e\n\u003cp\u003eCyrus' Zero Feedback circuit topology allows the key amplifier stages to operate without a conventional global feedback loop, contributing to excellent resolution, wide-open imaging and an exceptionally clean background. Each Mono X 300 delivers 225 watts continuously into 8 ohms, providing plenty of headroom for demanding loudspeakers.\u003c\/p\u003e\n\u003cp\u003eBalanced XLR and RCA inputs provide flexible connection to a wide range of pre-amplifiers, while buffered chain outputs make bi-amping and more complex systems straightforward. MC-Bus, 12V trigger, RS232 and automatic Music Sense functions provide additional control and integration options.\u003c\/p\u003e\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePair of dedicated monoblock power amplifiers\u003c\/li\u003e\n\u003cli\u003e225W continuous output into 8 ohms per amplifier\u003c\/li\u003e\n\u003cli\u003eCompletely separate amplification for left and right channels\u003c\/li\u003e\n\u003cli\u003eCyrus Zero Feedback amplifier topology\u003c\/li\u003e\n\u003cli\u003eBalanced XLR and RCA analogue inputs\u003c\/li\u003e\n\u003cli\u003eBuffered chain output for bi-amping applications\u003c\/li\u003e\n\u003cli\u003e116dBA signal-to-noise ratio\u003c\/li\u003e\n\u003cli\u003eWide 0.1Hz - 300kHz frequency response\u003c\/li\u003e\n\u003cli\u003eHigh 700V\/µs slew rate\u003c\/li\u003e\n\u003cli\u003eAutomatic Music Sense power control\u003c\/li\u003e\n\u003cli\u003eMC-Bus system integration\u003c\/li\u003e\n\u003cli\u003eRS232 and 12V trigger control\u003c\/li\u003e\n\u003cli\u003eIntelligent twin-fan cooling system\u003c\/li\u003e\n\u003cli\u003eCompact die-cast Cyrus chassis\u003c\/li\u003e\n\u003cli\u003eMade in England\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"hb-monox300-panel-2\" class=\"hb-panel\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAmplification - Per Amplifier\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eType: Monoblock Power Amplifier\u003c\/li\u003e\n\u003cli\u003eOutput Power: 225W RMS continuous into 8 ohms\u003c\/li\u003e\n\u003cli\u003eAmplifier Topology: Zero Feedback\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 0.1Hz - 300kHz (-3dB)\u003c\/li\u003e\n\u003cli\u003eTHD+N: Less than 0.05% at two-thirds full power, 20Hz - 20kHz \/ 8 ohms\u003c\/li\u003e\n\u003cli\u003eTHD+N: Less than 0.004% at 1kHz \/ 8 ohms\u003c\/li\u003e\n\u003cli\u003eSignal-to-Noise Ratio: 116dBA referenced to 225W \/ 8 ohms\u003c\/li\u003e\n\u003cli\u003eSlew Rate: 700V\/µs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Balanced XLR Input\u003c\/li\u003e\n\u003cli\u003e1 x Unbalanced RCA Input\u003c\/li\u003e\n\u003cli\u003eSelectable RCA or Balanced Input\u003c\/li\u003e\n\u003cli\u003eRCA Input Impedance: 47k ohms\u003c\/li\u003e\n\u003cli\u003eBalanced Input Impedance: 20k ohms\u003c\/li\u003e\n\u003cli\u003eRCA Sensitivity for 225W \/ 8 ohms: 890mV\u003c\/li\u003e\n\u003cli\u003eBalanced Sensitivity for 225W \/ 8 ohms: 1.78V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOutputs \u0026amp; Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpeaker Output with Dual Connections for Bi-Wiring\u003c\/li\u003e\n\u003cli\u003eBuffered Chain Output\u003c\/li\u003e\n\u003cli\u003eMC-Bus Input and Output\u003c\/li\u003e\n\u003cli\u003eRS232 Control\u003c\/li\u003e\n\u003cli\u003e12V Trigger Control\u003c\/li\u003e\n\u003cli\u003eAutomatic Music Sense Power Control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCooling\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIntelligent Twin-Fan Forced-Air Cooling\u003c\/li\u003e\n\u003cli\u003eFan Speed Automatically Adjusts According to Operating Temperature\u003c\/li\u003e\n\u003cli\u003eFans Switch Off When Cooling Is Not Required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStandby Consumption: Less than 1W per amplifier\u003c\/li\u003e\n\u003cli\u003ePower Consumption with No Signal: 23W per amplifier\u003c\/li\u003e\n\u003cli\u003eMaximum Power Consumption: 750W per amplifier\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions \u0026amp; Weight - Per Amplifier\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWidth: 215mm\u003c\/li\u003e\n\u003cli\u003eHeight: 75mm\u003c\/li\u003e\n\u003cli\u003eDepth: 365mm\u003c\/li\u003e\n\u003cli\u003eWeight: 6.4kg\u003c\/li\u003e\n\u003cli\u003eConstruction: Die-Cast Chassis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2 x Cyrus Mono X 300 Monoblock Power Amplifiers\u003c\/li\u003e\n\u003cli\u003eMains Power Cables\u003c\/li\u003e\n\u003cli\u003eAssociated Cyrus Connection Accessories as Supplied\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cyrus","offers":[{"title":"Default Title","offer_id":62741755756931,"sku":null,"price":1895.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0160\/4606\/3670\/files\/BASIKSUB-2026-10-13T135107.081.png?v=1791896060","url":"https:\/\/www.holburnonline.co.uk\/products\/cyrus-mono-x-300","provider":"Holburn Online","version":"1.0","type":"link"}