McIntosh MC451 Dual Mono Power Amplifier
20490,00 €
The MC451 Dual Mono Amplifier joins the MC901 in offering the ultimate solution to bi-amping a loudspeaker. Like the MC901, the MC451 uses our Hybrid Drive technology that combines a separate vacuum tube and solid state amplifier onto one single chassis to produce the best possible sound performance from a bi-ampable speaker. Unlike the larger MC901, the MC451 has a more conventional McIntosh form factor and size, allowing it to fit into home audio systems, racks, and furniture more easily.
The MC451 is comprised of a 150 Watt vacuum tube amplifier and a 300 Watt solid state amplifier, which is more than enough power to drive virtually all speakers. The vacuum tube section drives the speaker’s midranges and tweeters, while the solid state section drives the woofers. The 150 Watt vacuum tube amplifier is powered by four KT88 output tubes which are located under a removable wire cage, plus two 12AT7 and one 12AX7A signal tubes; it uses our patented Unity Coupled Circuit output transformer to deliver its full 150 Watts into almost any speaker regardless if it has 2, 4 or 8 Ohm impedance.
Similarly, the 300 Watt solid state amplifier delivers its full 300 Watts into a 2, 4 or 8 Ohm impedance speaker via our Autoformer™ technology. The two amplifiers in the MC451 are designed to work together in a synergistic relationship and are specifically engineered to assure that each only amplifies its intended frequencies. The large but quiet toroidal transformer generates enough power so that neither amplifier robs power or performance from the other. All of this results in easy bi-amping with unparalleled performance and sound reproduction from your speakers.
Bi-amping your speakers with the MC451 is easy. No longer do you need fiddle with two separate amplifiers, an external crossover, and a lot of trial and error to properly configure the two separate amplifiers with often times only so-so results. The MC451 solves these hassles thanks to its internal, adjustable crossover. The MC451’s crossover tailors the output frequency range of each amplifier section to the attached loudspeaker. Simply set the CROSSOVER POINT knob on the back of the MC451 to the loudspeaker’s crossover point, then frequencies below the crossover point will be sent to the solid state amplifier and frequencies above it will be sent to the vacuum tube amplifier.
This adjustable crossover allows you to optimize the performance of both amplifier sections to your speaker’s specifications and to your listening preferences. Gain levels for the vacuum tube amplifier can be adjusted from -6dB to +3dB. A direct feed can also be connected to each amplifier section, thus bypassing the internal crossover.
The MC451 features our DualView™ Power Output Meter. The DualView meter features two of our traditional, fast responding mechanical meters stacked above and below each other in a single meter window; one meter is dedicated to the 150 Watt vacuum tube amp and the other to the 300 Watt solid state amp. Each meter operates independently of the other and displays the real time power reading of each amplifier section.
| Power Output per Channel: | Solid State section: 300 Watts @ 2, 4 or 8 Ohms, Vacuum Tube section: 150 Watts @ 2, 4 or 8 Ohms |
| Number of Channels: | 1 |
| Total Harmonic Distortion: | Solid State section: 0.005% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20,000Hz. Vacuum Tube section: 0.5% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20,000Hz |
| Frequency Response: | Solid State section: +0, -0.25dB from 20Hz to 20,000Hz, +0, -3dB from 10Hz to 100,000Hz. Vacuum Tube section: +0, -0.5dB from 20Hz to 20,000Hz, +0, -3dB from 10Hz to 70,000Hz |
| Circuit Configuration: | Solid State section: Push-Pull Complementary, Vacuum Tube section: Unity Coupled |
| Output Type: | Solid State section: Autoformer™, Vacuum Tube section: Unity Coupled Output Transformer |
| Unit Dimensions (W x H x D): | 17-7/8" (45.4cm) x 11-13/16" (30cm) x 21-1/2" (54.6cm) |
| Unit Weight: | 60.3Kg |
McIntosh is an iconic American audio brand known worldwide for reference-grade amplification, unmistakable industrial design, and decades of engineering heritage. From classic tube circuits to modern solid-state power, McIntosh components are built for long-term ownership and for systems that sound authoritative, controlled and effortlessly musical.
Hi-Fi Market is an authorised McIntosh dealer in Estonia, supplying genuine products through official distribution channels with manufacturer warranty and local after-sales support. We help you choose the right McIntosh direction for your room and listening habits — whether you’re building around an integrated amplifier, moving to preamplifier + power amplifier separates, or refining sources and cabling to get the last layer of resolution and tonal balance.
Visit our showroom near Tallinn (Tabasalu) to discuss real-world system matching and hear selected McIntosh components in a calm, focused setup before you commit.
Build a Reference Stereo System with McIntosh
McIntosh is most often chosen as the heart of a serious two-channel system. Start with an integrated amplifier for a clean, powerful foundation, or step up to separates (preamplifier + power amplifier) for maximum scale and control. Then complete the chain with sources that match how you listen — streaming and digital playback, or a vinyl front end with a proper phono stage. We’ll help you keep the system coherent in a real room and choose a path that makes long-term sense.
Explore compatible categories to build a balanced McIntosh-based system:
– Integrated Amplifiers
– Preamplifiers
– Power Amplifiers
– Network Players / Streamers
– DACs (Digital-to-Analog Converters)
– Phono PreamplifiersIf you want a short, well-matched shortlist, contact us — we’ll recommend a McIntosh system path that fits your room, music preferences, budget, and upgrade plan.
FREE DELIVERY ACROSS ESTONIA (For orders over €100)
Shipments within Estonia generally arrive at the destination specified by the buyer within 3-5 business days from the entry into force of the sales contract. The contract enters into force from the moment the amount due is received into the online store's bank account.
If you wish, you can also pick up the goods yourself. The address of the salon is Kallaste 7, Tabasalu.
WE DELIVER TO ALL COUNTRIES OF THE EUROPEAN UNION.
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OWNER OF THE ONLINE STORE
The owner of the online store hifimarket.ee is Audio Sommelier OÜ (registration number 16891515), address Kallaste, 7, Tabasalu Keskus, Estonia 76901
