{"product_id":"chord-ultima","title":"Chord ULTIMA","description":"\u003ch2\u003eThe mono power amplifier at the top of the Chord range\u003c\/h2\u003e\u003cp\u003eChord ULTIMA is the reference monophonic power amplifier from Chord Electronics: 780 W RMS into 8 Ω, 1,405 W RMS into 4 Ω and, according to the manufacturer, 2,500 W into 2 Ω. Sold as a single unit: a stereo system needs two amplifiers. Each unit weighs 66.7 kg.\u003c\/p\u003e\u003cp\u003eThe manufacturer conceived it for the highest-end systems, those which by their nature use large, demanding and difficult-to-drive loudspeakers, and presents it as the most accomplished amplifier in its 34-year history. The stated peak output current exceeds 500 A.\u003c\/p\u003e\u003ch2\u003eA new topology with academic roots\u003c\/h2\u003e\u003cp\u003eULTIMA uses an all-new circuit, the first completely new design since the company was founded. Its dual feed-forward error correction stems from a technical paper by Malcolm J. Hawksford, emeritus professor at Essex University, later refined by Bob Cordell of Bell Labs.\u003c\/p\u003e\u003cp\u003eTo this foundation John Franks added his own solutions for ultra-high-frequency power supplies. Each amplifier uses 64 proprietary MOSFET power devices; the drive circuit is an ultra-low-distortion, high-voltage amplifier operating at 300 V per microsecond, with both feed-forward and feedback compensation techniques. Operation is class AB with sliding bias.\u003c\/p\u003e\u003ch2\u003eConnections, chassis and dimensions\u003c\/h2\u003e\u003cp\u003eThe inputs are balanced XLR and unbalanced RCA, in both cases with one inverting and one non-inverting socket. The loudspeakers are reached through two pairs of gold-plated, high-current terminals, suitable for bi-wiring; a 12 V trigger input handles automatic start-up (the Chord Electronics Auto Start function).\u003c\/p\u003e\u003cp\u003eThe chassis is solid aluminium, convection cooled, with the top light ring included and dimmable lighting. The Integra side legs are included and bring the dimensions to 480 × 305 × 750 mm (W × H × D); with the side blocks, available as an option, the size is 420 × 285 × 750 mm. Stated consumption at full power is 3,500 W.\u003c\/p\u003e\u003ch2\u003eTechnical data\u003c\/h2\u003e\u003cul\u003e\u003cli\u003eType: mono power amplifier. Sold as a single unit: a stereo system needs two amplifiers.\u003c\/li\u003e\u003cli\u003eOutput power: 780 W RMS into 8 Ω; 1,405 W RMS into 4 Ω.\u003c\/li\u003e\u003cli\u003eInputs: balanced XLR inverting and non-inverting; unbalanced RCA inverting and non-inverting, gold plated.\u003c\/li\u003e\u003cli\u003eTrigger: 1 × 12 V input (Chord Electronics auto start).\u003c\/li\u003e\u003cli\u003eOutputs: 2 pairs of gold-plated, high-current loudspeaker terminals (bi-wireable).\u003c\/li\u003e\u003cli\u003eOperating class: AB with sliding bias.\u003c\/li\u003e\u003cli\u003ePower devices: 64 proprietary MOSFETs.\u003c\/li\u003e\u003cli\u003eFrequency response: 0.2 Hz - 46 kHz (−1 dB); 0.1 Hz - 200 kHz (−3 dB).\u003c\/li\u003e\u003cli\u003eTotal harmonic distortion: 0.005 %.\u003c\/li\u003e\u003cli\u003eSignal-to-noise ratio: better than −90 dB.\u003c\/li\u003e\u003cli\u003eInput impedance: 100 kΩ (unbalanced and balanced); output impedance: 0.04 Ω.\u003c\/li\u003e\u003cli\u003eGain: 30 dB.\u003c\/li\u003e\u003cli\u003ePower consumption: 3,500 W at full power; 10 W in standby.\u003c\/li\u003e\u003cli\u003eDimensions with the included Integra legs: 480 × 305 × 750 mm (W × H × D).\u003c\/li\u003e\u003cli\u003eDimensions with the optional side blocks: 420 × 285 × 750 mm.\u003c\/li\u003e\u003cli\u003eWeight: 66.7 kg.\u003c\/li\u003e\u003cli\u003eFinishes: black or silver.\u003c\/li\u003e\u003cli\u003eIncluded: 15 A IEC mains cable.\u003c\/li\u003e\u003c\/ul\u003e","brand":"Chord Electronics Ltd.","offers":[{"title":"Black","offer_id":56563667632472,"sku":"CHOELEULTIMA-B","price":51964.5,"currency_code":"EUR","in_stock":true},{"title":"Silver","offer_id":56563667665240,"sku":"CHOELEULTIMA","price":51964.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0615\/5278\/7645\/files\/chord-electronics-Choral-REFERENCE-ULTIMA-0.001.webp?v=1768834657","url":"https:\/\/videosell.de\/products\/chord-ultima","provider":"Videosell store","version":"1.0","type":"link"}