{"product_id":"atoll-pr400-evo-preamplifier","title":"ATOLL PR400 Evo PREAMPLIFIER","description":"\u003cp\u003eThe PR400 EVO is the latest generation of our high-end preamplifier. The IN400 EVO inspires its design.\u003cbr\u003eIts power supplies and electronics have been reworked to significantly improve audio performance. We’ve added the ability to rename the inputs and select the standby mode: Low Power or Preheat. It operates in dual mono (one low-noise linear transformer per channel) and pure balanced. The selection relays are also separate for the two channels. The coupling capacitors (high-end MKP) are shielded in independent enclosures to avoid radiation issues. Volume is controlled by two independent and perfectly synchronised ALPS motorised potentiometers. We use a proprietary servo system based on non-intrusive real-time audio measurement.\u003c\/p\u003e\n\u003cdiv data-e-type=\"column\" data-element_type=\"column\" data-id=\"f849906\" class=\"elementor-column elementor-col-25 elementor-top-column elementor-element elementor-element-f849906\"\u003e\n\u003cdiv class=\"elementor-widget-wrap elementor-element-populated\"\u003e\n\u003cdiv data-widget_type=\"text-editor.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"c8da470\" class=\"elementor-element elementor-element-c8da470 elementor-widget elementor-widget-text-editor\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cul\u003e\n\u003cli\u003e10 mm brushed, micro-blasted, and anodised aluminium front panel, with high-precision engraving.\u003c\/li\u003e\n\u003cli\u003eMachined aluminum heatsinks and knobs.\u003c\/li\u003e\n\u003cli\u003e2 mm steel chassis.\u003c\/li\u003e\n\u003cli\u003eFour toroidal transformers: 2 x 10 VA (audio) + 10 VA \u0026amp; 1.6 VA (logic).\u003c\/li\u003e\n\u003cli\u003eHigh-quality shielded MKP coupling capacitors.\u003c\/li\u003e\n\u003cli\u003eFull dual-mono structure:\u003cbr\u003e      – Two toroidal transformers: One per channel.\u003cbr\u003e      – Four independent audio stages, perfectly symmetrical structure.\u003cbr\u003e      – Two motorised ALPS potentiometers: One per channel.\u003c\/li\u003e\n\u003cli\u003eBipolar transistor input stages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-e-type=\"column\" data-element_type=\"column\" data-id=\"90121f4\" class=\"elementor-column elementor-col-25 elementor-top-column elementor-element elementor-element-90121f4\"\u003e\n\u003cdiv class=\"elementor-widget-wrap elementor-element-populated\"\u003e\n\u003cdiv data-widget_type=\"text-editor.default\" data-e-type=\"widget\" data-element_type=\"widget\" data-id=\"bed3ffc\" class=\"elementor-element elementor-element-bed3ffc elementor-widget elementor-widget-text-editor\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cul style=\"color: #545454;\"\u003e\n\u003cli\u003eBipolar transistor current sources and LEDs.\u003c\/li\u003e\n\u003cli\u003ePerfectly symmetrical audio stages with very low feedback.\u003c\/li\u003e\n\u003cli\u003ePrecise balance adjustment.\u003c\/li\u003e\n\u003cli\u003eInput renaming is available.\u003c\/li\u003e\n\u003cli\u003eSleep mode selection: Low power or preheating.\u003c\/li\u003e\n\u003cli\u003eAdjustable button backlighting.\u003c\/li\u003e\n\u003cli\u003eHigh-contrast OLED display: ON or OFF (after 5 seconds of inactivity).\u003c\/li\u003e\n\u003cli\u003eATOLL global remote control is included as standard.\u003c\/li\u003e\n\u003cli\u003eThe PR400 EVO can accommodate the following optional boards:\u003cbr\u003e      – DAC: DA100 and DA200.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e                                                  \u003cstrong\u003eTECHNICAL DATA\u003c\/strong\u003e\n\u003ctable width=\"100%\" style=\"height: 235.2px; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px; width: 51.1535%;\"\u003e \u003cstrong\u003eAnalog power supply\u003c\/strong\u003e:\u003c\/td\u003e\n\u003ctd style=\"width: 48.4775%; height: 19.6px;\"\u003e2 x 10 VA linear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px; width: 51.1535%;\"\u003e\n\u003cstrong\u003eDigital power supply\u003c\/strong\u003e:\u003c\/td\u003e\n\u003ctd style=\"width: 48.4775%; height: 19.6px;\"\u003e10 VA \u0026amp; 1.6 VA linear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px; width: 51.1535%;\"\u003e\n\u003cstrong\u003eTotal of capacitors\u003c\/strong\u003e:\u003c\/td\u003e\n\u003ctd style=\"width: 48.4775%; height: 19.6px;\"\u003e112 000 µF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px; width: 51.1535%;\"\u003e\n\u003cstrong\u003eNumber of inputs\u003c\/strong\u003e:\u003c\/td\u003e\n\u003ctd style=\"width: 48.4775%; height: 19.6px;\"\u003e5 lines + 2 XLR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px; width: 51.1535%;\"\u003e\n\u003cstrong\u003eInput impedance\u003c\/strong\u003e:\u003c\/td\u003e\n\u003ctd style=\"width: 48.4775%; height: 19.6px;\"\u003e357 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px; width: 51.1535%;\"\u003e\n\u003cstrong\u003eSensitivity\u003c\/strong\u003e:\u003c\/td\u003e\n\u003ctd style=\"width: 48.4775%; height: 19.6px;\"\u003e4 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px; width: 51.1535%;\"\u003e\n\u003cstrong\u003eSignal-to-noise ratio\u003c\/strong\u003e:\u003c\/td\u003e\n\u003ctd style=\"width: 48.4775%; height: 19.6px;\"\u003e100 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px; width: 51.1535%;\"\u003e\n\u003cstrong\u003eDistortion at 1 kHz\u003c\/strong\u003e:\u003c\/td\u003e\n\u003ctd style=\"width: 48.4775%; height: 19.6px;\"\u003e0.004%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px; width: 51.1535%;\"\u003e\n\u003cstrong\u003eBandwidth\u003c\/strong\u003e:\u003c\/td\u003e\n\u003ctd style=\"width: 48.4775%; height: 19.6px;\"\u003e0.5 Hz – 780 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px; width: 51.1535%;\"\u003e\n\u003cstrong\u003eRising time\u003c\/strong\u003e:\u003c\/td\u003e\n\u003ctd style=\"width: 48.4775%; height: 19.6px;\"\u003e 0.4 µs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px; width: 51.1535%;\"\u003e\n\u003cstrong\u003eDimensions\u003c\/strong\u003e:\u003c\/td\u003e\n\u003ctd style=\"width: 48.4775%; height: 19.6px;\"\u003e440 x 370 x 130 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"height: 19.6px; width: 51.1535%;\"\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e:\u003c\/td\u003e\n\u003ctd style=\"width: 48.4775%; height: 19.6px;\"\u003e15 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HIFIPRO","offers":[{"title":"silver","offer_id":42730896851006,"sku":null,"price":8899.0,"currency_code":"CAD","in_stock":false},{"title":"Black","offer_id":42730896883774,"sku":null,"price":8899.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2209\/7214\/files\/PR400-EVO-noir-scaled.jpg?v=1777152130","url":"https:\/\/hifipro.ca\/products\/atoll-pr400-evo-preamplifier","provider":"HIFIPRO","version":"1.0","type":"link"}