







McIntosh
MC611 1-Channel Power Amplifier
- Type: Solid State
- 600 Watts x 1-Channel
- Quad Balanced, Autoformer™, Power Guard®, Sentry Monitor™, Monogrammed Heatsinks™, Solid Cinch™ speaker binding posts
Pairs well with
In stock! Ships within 1-2 business days.
90-day risk-free trial
2-Year Warranty
Complimentary shipping & returns
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Overview

The monoblock MC611 Quad Balanced Power Amplifier produces 600 Watts of power – enough to satisfy nearly any loudspeaker. A pair of MC611s can easily drive an impressive home stereo system, or add more of them to power a home theater. Thanks to our unique output Autoformer™ technology, your speakerswill receive the full 600 Watts regardless if they have 2, 4 or 8 Ohm impedance, allowing you the ability to use the MC611 to its full potential.

"The MC611 is one of the most beautiful sounding amplifiers I’ve ever heard, and at the same time is one of the most realistic sounding amplifiers I’ve ever heard. And this continues to blow me away every time I turn the MC611s’ power on." Winner of Best of 2018 Blue Note Award. - Enjoy The Music
The MC611 has received numerous updates and improvements compared to our previous 600 Watt monoblock model. Chief among them is that filter capacity has been doubled which has resulted in a dramatic 55% increase in dynamic headroom from 1.8dB to 2.8dB. This twofold increase in filter capacity also helps improve the performance of low end bass frequencies.
"The MC611s offer massive power with minimal distortion at all frequencies, into any load. In doing so they are virtually unique… Easy going silky smooth sound, richly detailed and dynamically awesome." Awarded 5 out of 5 Globes. - Hi-Fi World
The front panel features new direct LED backlighting for improved appearance and color accuracy. On top, the audio Autoformer and power transformer remain seated just behind the front panel, but are now contained in new glass topped enclosures. Behind them are 2 of our Monogrammed Heatsinks™ which connect to advanced high current output transistors that help eliminate thermal equilibrium lag time. A screening of the amplifier’s block diagram has been added to the panel located between the heatsinks.
"Attack, sustain, decay came through with such clarity and power you – I – rarely hear through high-power amplifiers... Highly Recommended, A++++." - Audiophile Style
On the back, there continues to be 3 sets of our Solid Cinch™ speaker binding posts (1 set for each speaker impedance), but more space has been added between each set to allow for easier speaker cable management. Our eco-friendly power management system, which will turn the amp off after a set amount of time when no input signal has been detected, has also been added. Other enhancements include heavier gauge internal wiring and upgraded circuit components.
"A rare combination of effortless power and sophistication" that allows it to easily "drive almost any type of speaker." Highly Recommended: 6 Stars - Lyd & Bilde
In addition to all these improvements, the MC611 is full of other exclusive McIntosh technologies:
Both a balanced and unbalanced output are included to make bi-amping or tri-amping your speakers easier; they can also be used to send the audio signal to a secondary system if your preamplifier does not have enough outputs, or to connect a powered subwoofer.

"Natural, effortless control of dynamic swings, a linear power response throughout the frequency range, a true sense of fidelity to the recorded event, a Muhammed Ali-like speed and power propelling every note, deep authentic bass and a wonderfully human and palpable midrange with an organic, yet polished aural touch." - AudioStream
The MC611 sits on a beautiful polished stainless steel chassis and features the timeless McIntosh aesthetic of a black glass front panel, illuminated logo, control knobs, aluminum handles and of course a large 8” (20.3 cm) fast responding blue Watt meter. Contact your local dealerto learn more.
Specifications
Electronic Specifications
FTC Power Output Rating
600 W
Power Output per Channel
600 W into 2, 4 or 8 ohms
Number of Channels
1
Total Harmonic Distortion
0.005%
S/N below rated output
Balanced: 124dB
Unbalanced: 120dB
Dynamic Headroom
2.8dB
Damping Factor
>40 Wideband
Rated Power Band
20Hz to 20kHz
Frequency Response
+0, -0.25dB from 20Hz to 20kHz
+0, -3.0dB from 10Hz to 100kHz
Control
Remote Power Control
Yes
Multi-Channel DB25 Cable
N/A
General Specifications
Circuit Configuration
Quad Balanced
Circuit Design
Solid State
Mono Bridge
N/A
Mono Parallel
N/A
Output Type
Autoformer™
Meters
Yes
Meter Light Switch
Yes
Balanced Input
1
Front Panel
Glass with handles
Illumination
Direct LED
Chassis Style
Polished stainless steel & black painted steel
Connectivity
Speaker Binding Post Type
Patented Solid Cinch™ Speaker Binding Posts
Weights & Dimensions
Unit Dimensions (W x H x D)
17-1/2" (44.45cm) x 9-7/16" (23.97cm) (including feet) x 22" (55.88cm) (including front panel, handles and cables)
Unit Weight
97.5 lbs (44.32 kg)
Shipping Weight
130.5 lbs (59.32 kg)
FAQs
Please read our FAQs page to find out more.
Do you price match?
Yes. We match any authorised dealer, including big-box retailers. If you find the same product at a lower price, contact us and we'll match it.
Do you offer free shipping?
Yes — free shipping on every order, with 2-day delivery available on most products. Easy returns and exchanges are included.
Where is your showroom?
We're at 6362 Alder Drive, Houston, Texas. The showroom lets you hear and compare reference-level systems in person before making any decisions. If you're considering a larger purchase or installation, it's well worth the visit.
Can I buy online without visiting the showroom?
Yes. The full product range is available through the online store with free nationwide shipping. For more complex system builds, speaking with one of our advisers first tends to lead to a better result.
Do you offer financing?
Yes. Special financing is available through the BrandSource Credit Card for qualifying purchases, allowing you to spread payments over time with no annual fee. Promotional rebate savings are also available periodically. See the financing page for full details.
Do you install systems as well as sell equipment?
Yes — installation is central to what we do. We design and install whole-home audio and video, home theaters, media rooms, outdoor audio, lighting and motorised shades, and full smart home automation.
Do you provide support after installation?
Yes. We provide ongoing service and support to ensure systems continue performing as intended — not just on installation day, but over the long term.