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Authorized dealers for McIntosh Labs MC257 7-Channel Solid State Amplifier

  • Absoulute Audio plus Video — in-store — Aiken, South Carolina, United States (website)
  • Holt Hill — online and in-store — Andover, Massachusetts, United States (website)
  • Resolution A/V — in-store — New York City, New York, United States (website)
  • A Tube High Fidelity — online and in-store — Almere, Flevoland, Netherlands (website)
  • Abt Electronics — online and in-store — Glenview, Illinois, United States (website)
  • Acoustic Designs Inc. — in-store — Scottsdale, Arizona, United States (website)
  • Advance Audio — in-store — Wichita, Kansas, United States (website)
  • Ahead Stereo — in-store — Los Angeles, California, United States (website)
  • Ajasom — online and in-store — Amadora, Lisboa, Portugal (website)
  • Alen Audio — in-store — Extramurs, Comunidad Valenciana, Spain (website)

and 225 more verified dealers

McIntosh Labs MC257 7-Channel Solid State Amplifier #1
McIntosh Labs MC257 7-Channel Solid State Amplifier variant 1
McIntosh Labs MC257 7-Channel Solid State Amplifier variant 2
McIntosh Labs MC257 7-Channel Solid State Amplifier variant 3
McIntosh Labs MC257 7-Channel Solid State Amplifier variant 4
McIntosh Labs MC257 7-Channel Solid State Amplifier variant 5
McIntosh Labs MC257 7-Channel Solid State Amplifier variant 6
McIntosh Labs MC257 7-Channel Solid State Amplifier variant 7
McIntosh Labs MC257 7-Channel Solid State Amplifier variant 8

McIntosh Labs MC257 7-Channel Solid State Amplifier

United States flag

Built for commanding home cinema, the MC257 delivers 250W front-channel power, consistent output into 4- or 8-ohm speakers, and greater dynamic headroom for more assured low-frequency control. StereoNET United Kingdom also highlights its quiet toroidal transformer, fan-free heatsinks and premium terminals—serious engineering for demanding seven-channel systems.

View at McIntosh Labs
Specifications13 reviews & sources

WATT RECOMMENDS

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63/100
Rating for MC257 7-Channel Solid State Amplifier

Kinda Soggy

Sound Quality

52/100

Build Quality

82/100

Value for Money

85/100

Pros

Delivers 250W to the front three channels and 200W with all seven channels driven, with full rated power into either 4- or 8-ohm loads.

Increased filter capacity and 3.3dB dynamic headroom support stronger low-frequency performance.

Fan-free heatsinks and a quiet toroidal isolation transformer are designed to keep mechanical and electrical noise low.

WATT RECOMMENDS

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What Reviewers Are Saying

"Filter capacity has also been boosted by 20% resulting in a 94% increase in dynamic headroom."

— StereoNET United Kingdom

SOUND QUALITY PERFORMANCE 52/100

The supplied coverage is a product announcement rather than a listening review, so it offers little direct evidence about the MC257's overall sonic character. It does document substantial multichannel power delivery, increased filter capacity and a quiet transformer, but does not assess tonal character, resolution or spatial presentation in a system.

Transparency Resolution

50/100

StereoNET notes a specially wound quiet toroidal isolation transformer intended to keep noise to a minimum. However, there is no reported listening evidence concerning detail retrieval, openness, grain or background silence.

Tonal Balance Musicality

50/100

The available material does not describe the amplifier's tonal balance, timbre, warmth, neutrality or long-term musical engagement. No listening impressions are provided from which to judge its voicing.

Dynamics

58/100

The MC257 is specified to supply 250W to each of the three front channels and 200W with all seven channels driven, into either 4 or 8 ohms. StereoNET also reports a 20% increase in filter capacity and 3.3dB of dynamic headroom, though it does not provide audition-based comments on transient impact or speaker control.

Soundstage Imaging

50/100

The review material does not discuss image focus, soundstage width, depth or surround-field coherence. There are no listening observations about the amplifier's spatial performance.

Assessments of Build Quality, Usability, and Overall Propositions.

Build Quality

82/100

The documented engineering is substantial: a quiet toroidal isolation transformer, five heatsinks that eliminate the need for cooling fans, increased filter capacity and gold-plated speaker terminals. Seven balanced inputs, Dynamic Power Manager operation into 4- or 8-ohm loads, power-management provisions and durable direct-LED illumination further support a thoughtfully equipped multichannel design, although the coverage does not examine long-term reliability.

Value for Money

85/100

StereoNET lists the MC257 at £12,995, placing it firmly in the premium home-cinema amplifier market. The supplied coverage does not compare its price or performance with competing multichannel amplifiers, so there is no direct reviewer verdict on whether the asking price is especially compelling.

Reviews & Sources

Professional reviews and sources for this product's Watt'n Potatoes analysis.

Online Reviews & Mentions

YouTube Reviews

Forum Mentions

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Specifications

FTC Power Output Rating
250 W
Power Output per Channel
3 Front Channels only: 250 W into 4 or 8 ohmsAll 7 Channels: 200 W into 4 or 8 ohms
Number of Channels
7(can also be used as a 2-zone amplifier with 5 channels in zone A and 2 channels in zone B)
Total Harmonic Distortion
0.005%
S/N below rated output
108dB
Dynamic Headroom
3.3dB
Damping Factor
>70 @ 4 ohms>140 @ 8 ohms
Rated Power Band
20Hz to 20kHz
Frequency Response
+0, -0.25dB from 20Hz to 20kHz+0, -3dB from 10Hz to 100kHz
Remote Power Control
Yes, 7 or 5 + 2 Channel
Multi-Channel DB25 Cable
No
Circuit Configuration
Push-Pull Complementary
Circuit Design
Solid State
Mono Bridge
No
Mono Parallel
No
Output Type
Direct Coupled with Dynamic Power Manager®
Meters
Yes
Meter Light Switch
Yes
Balanced Input
7
Front Panel
Glass
Illumination
Direct LED
Chassis Style
Polished stainless steel & black painted steel
Speaker Binding Post Type
Standard
Unit Dimensions (W x H x D)
17-1/2" (44.5cm) x 9-7/16" (23.9cm) (including feet) x 21" (53.3cm) (including front panel and cables)
Unit Weight
95 lbs (43 kg)
Shipping Weight
128 lbs (58 kg)
Bridgeable
Trigger Input
Trigger Output
Display
Remote Control

Manufacturer's Description — McIntosh Labs

  • Type: Solid State
  • 250 Watts x 3-Channels or 200 Watts x 7-Channels
  • Dynamic Power Manager®; Power Guard®, Sentry Monitor™, Monogrammed Heatsinks™, TripleView™ Power Output Meter

Bring your home theater dreams to life with the MC257 7-Channel Power Amplifier. Experience the latest blockbusters along with your favorite movies like never before in your home theater with the sound quality and power only McIntosh can deliver.


The MC257 is highlighted by our new eye-catching TripleView Power Output Meter that independently indicates the real time power reading of the amplifier’s three front channels. The easy-to-read, 15” (38 cm) wide TripleView meter design is a streamlined approach to the three individual meters found on our previous generation 7-channel home theater amplifier. Instead of three separate meter windows each housing a single meter, the TripleView features three of our traditional mechanical meters in a single meter enclosure.


While a totally new design, each of the three pointers in the TripleView meter have the same inviting motion that McIntosh meters are known for and perform at the same high level as any of our meters. The captivating look and glow of the TripleView meter is sure to be a conversation starter, but its trademarked blue lighting can be turned off so as not to compete with your TV or movie screen.


In addition to the new TripleView meter, the MC257 features many other upgrades. When using just the front left, center and right channels, power output has been increased by 25% from 200 Watts per channel to 250 Watts per channel. When using all 7 channels, each will receive a healthy 200 Watts per channel. Regardless of how many channels are used, the full 200 or 250 Watts is delivered to either 4 or 8 Ohm speakers via our Dynamic Power Manager (DPM) technology. Filter capacity has been increased by 20% which has produced an amazing 94% increase in dynamic headroom from 1.7dB to 3.3dB as well as improving low frequency performance – both key features in a home theater amplifier, especially when listening to an energetic soundtrack.


The MC257 comes with five of our McIntosh Monogrammed Heatsinks which are connected to advanced high current output transistors to efficiently and silently cool the amplifier; as a result, noisy cooling fans that can interfere with the movie soundtrack are not needed. A quiet, specially wound toroidal isolation power transformer also helps keep noise to a minimum. Speaker terminals have been updated to our standard gold-plated binding posts that prevent corrosion and ensure a quality signal is sent to your home theater speakers. Our power management system that will turn the amplifier off after a set amount of time when no input signal has been detected has also been added. Finally, the front panel is now lit by direct LED backlighting for improved color accuracy and durability.


Besides all these upgrades, the MC257 comes with steadfast McIntosh technologies like Power Guard to prevent potential speaker damage caused by clipping and over-driving of the amplifier. Our Sentry Monitor technology protects against short-circuits by disengaging the output stage should the current ever exceed safe operating levels (it then resets automatically when operating conditions return to normal). Both balanced and unbalanced inputs are included to connect the MC257 home theater amplifier to your home theater processor


The MC257 can be utilized in many ways: it can power a 7-channel home theater by itself; it can be paired with either our MI128 or MI254 digital amplifiers in home theaters that have more than 7-channels; or it can be used in 5-channel home theaters with 2 of its channels available to power a second audio zone in your home.


The MC257 sits on a polished stainless steel chassis and bears the classic McIntosh design of a black glass front panel with the TripleView meter, illuminated logo, control knobs, and aluminum end caps. Contact your local dealer to learn more.


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Authorized dealers for McIntosh Labs MC257 7-Channel Solid State Amplifier

  • Absoulute Audio plus Video — in-store — Aiken, South Carolina, United States (website)
  • Holt Hill — online and in-store — Andover, Massachusetts, United States (website)
  • Resolution A/V — in-store — New York City, New York, United States (website)
  • A Tube High Fidelity — online and in-store — Almere, Flevoland, Netherlands (website)
  • Abt Electronics — online and in-store — Glenview, Illinois, United States (website)
  • Acoustic Designs Inc. — in-store — Scottsdale, Arizona, United States (website)
  • Advance Audio — in-store — Wichita, Kansas, United States (website)
  • Ahead Stereo — in-store — Los Angeles, California, United States (website)
  • Ajasom — online and in-store — Amadora, Lisboa, Portugal (website)
  • Alen Audio — in-store — Extramurs, Comunidad Valenciana, Spain (website)

and 225 more verified dealers