{"product_id":"mc901-ac","title":"MC901 AC","description":"\u003cp\u003e\u003cstrong\u003eMcIntosh MC901: Two Amplifiers in One Monoblock\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe McIntosh MC901 Dual Mono Amplifier is a 1-channel power amplifier \nfor high-end Hi-Fi systems and was specially developed for bi-amping loudspeakers. \nTwo different amplifier sections operate on a shared chassis: \na 300-watt tube amplifier and a 600-watt transistor amplifier. \nThis allows each amplifier technology to handle precisely the range for which it is intended.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eClear Division of Tasks for Mid\/High Frequencies and \nLow Frequencies\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe tube section powers the mid and high-frequency ranges of the loudspeaker, \nwhile the transistor section drives the power-intensive woofers. Both \nsections deliver their full power at 2, 4, or 8 ohms. For a stereo system, \ntwo MC901s are required, as one MC901 drives one loudspeaker.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eBi-Amping Without External Crossover\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe MC901 features an integrated, adjustable internal crossover. The \nlow-pass filter of the transistor section and the high-pass filter of the tube section \ncan each be adjusted from 100 Hz to 1 kHz. This allows the crossover point \nto be selected to match the loudspeaker. Additionally, the relative \nlevels of both amplifier sections can be adjusted from -6 dB to +3 dB.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eConnections for Flexible Hi-Fi Setups\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe MC901 offers balanced and unbalanced inputs for Solid State Direct, \nVacuum Tube Direct, and Composite. Composite is the obvious choice if a signal \nfrom a preamplifier is to be distributed to both amplifier sections and \nadjusted via the internal filters. Direct Inputs bypass level adjustment and filters \nand are suitable for setups with an external crossover or separate signal routing.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eOperation and Control Directly on the Device\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe device features an input mode switch for balanced or unbalanced \ninputs, Direct\/Composite switch, filter and level controls, and an \nAuto-Off switch. On the front are the Power Control knob and the Meter Control knob. \nThe DualView™ Power Output Meter displays the power of the tube and transistor sections \nseparately in real-time.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eProtection Functions for Amplifiers and Loudspeakers\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePower Guard® protects the transistor section from clipping and audible \ndistortion. Power Guard Screen Grid Sensor™ monitors the KT88 output tubes \nand intervenes if the tubes would operate outside safe operating ranges. \nSentry Monitor™ monitors the output current and switches off the amplifier \nin critical conditions.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003ePlan for Sufficient Space for Installation\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe MC901 weighs 81.6 kg and should be \nplaced upright on the floor or a suitable amplifier stand. \nFor enclosed installation, specific ventilation requirements apply: at least \n48.3 cm of free space above, and 15.2 cm at the front, rear, and \nsides. We therefore recommend reviewing the selection with us to match \nloudspeakers, installation, and listening room.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003e\u003cu\u003ePros and Cons at a Glance\u003c\/u\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eReasons to choose the McIntosh MC901:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\n\u003cli\u003eCombination of 300-watt tube amplifier and \n600-watt transistor amplifier \n\n\u003c\/li\u003e\n\n\u003cli\u003eSpecially developed for bi-amping loudspeakers \n\n\u003c\/li\u003e\n\n\u003cli\u003eFull power at 2, 4, or 8 ohms \n\n\u003c\/li\u003e\n\n\u003cli\u003eInternal, adjustable crossover from 100 Hz to 1 \nkHz \n\n\u003c\/li\u003e\n\n\u003cli\u003eSeparate level adjustment for both amplifier sections \n\n\u003c\/li\u003e\n\n\u003cli\u003eDualView™ Power Output Meter for both \namplifier ranges \n\n\u003c\/li\u003e\n\n\u003cli\u003ePower Guard®, Power Guard SGS™, and Sentry Monitor™ as \nprotection functions\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eThings to know before buying:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\n\u003cli\u003eOne MC901 drives one loudspeaker; two units are needed for stereo \n\n\u003c\/li\u003e\n\n\u003cli\u003eThe loudspeaker must be suitable for separate control of the \nlow-frequency and mid\/high-frequency sections \n\n\u003c\/li\u003e\n\n\u003cli\u003eAt 81.6 kg, the amplifier requires a very stable \ninstallation location\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"McIntosh","offers":[{"title":"Chrome\/Black","offer_id":54748652274005,"sku":"61443","price":29990.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0995\/9715\/6693\/files\/IMG61443_170364.jpg?v=1787666899","url":"https:\/\/fidelity-hh.de\/en\/products\/mc901-ac","provider":"Fidelity","version":"1.0","type":"link"}