McIntosh Labs MC1502 2-Channel Vacuum Tube Amplifier
The MC1502 marries tube warmth with startling bass control, delivering 150 watts per channel of dynamic headroom. TONEAudio MAGAZINE found it composed from low volumes to peak levels, while Part Time Audiophile highlighted clean, extended bass and deep, layered imaging. A quiet, refined presentation makes this a commanding modern valve amplifier for demanding speakers.
WATT RECOMMENDS
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Deliciously Crispy
Sound Quality
94/100
Build Quality
94/100
Value for Money
91/100
Pros
Exceptional dynamic range and composure, remaining convincing at both low and very high listening levels.
Powerful, tightly controlled low frequencies with substantial impact and extension.
Warm, naturally saturated tube tonality paired with high resolution, clarity, and spacious layering.
Practical tube ownership through auto-biasing, protection circuitry, low noise, and long expected tube life.
Cons
Its 118-pound chassis is difficult to lift and position, often requiring help during installation.
Requires generous ventilation and about an hour of warm-up to reach its best performance.
Ultimate bass control at extreme levels is slightly surpassed by McIntosh’s large transistor amplifiers.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 94/100
Reviewers consistently describe an unusually controlled and powerful tube amplifier that retains warmth, refinement, and musical involvement. It is praised for clean resolution, formidable bass authority, effortless scale, and a spacious, precisely layered presentation.
Transparency Resolution
94/100
TONEAudio found a high level of resolution and a cleaner, less cloudy presentation that lets listeners peer deeply into recordings. Part Time Audiophile likewise heard greater clarity and texture, with no grain or chalkiness, while Tech Reviews praised openness and nuance without the detail-masking often associated with tube amplifiers.
Tonal Balance Musicality
93/100
The MC1502 is repeatedly characterized as slightly warm, harmonically rich, and emotionally engaging, but not excessively colored or stereotypically tubey. Reviewers heard fleshed-out body and natural timbre alongside clean modern tube linearity, air, and dynamic snap.
Dynamics
96/100
Dynamics are a major strength: TONEAudio reported incredible dynamic range, composure from quiet listening through extreme levels, and ease with dense recordings. Other reviewers describe stunning low-frequency slam, massive driver control, strong punch, and an ability to become loud without sounding strained; Tech Reviews only noted that McIntosh's large transistor amplifiers retain slightly greater ultimate control at punishing levels.
Soundstage Imaging
93/100
Part Time Audiophile heard effortless portrayal of depth, width, and layering, with images floating convincingly between the speakers. Tech Reviews also found a rare large soundscape from compact speakers and praised the amplifier's ability to place subtle nuances within it; TONEAudio noted that the stage remained intact even at extremely high levels.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
94/100
The 118-pound amplifier uses a polished stainless-steel chassis, McIntosh Unity Coupled output transformers, and dedicated 2, 4, and 8-ohm speaker taps. Reviewers praise its robust, carefully organized construction and quality components, while auto-biasing and Sentry Monitor protection add welcome practical reassurance; selectable balanced XLR and RCA inputs broaden system compatibility.
Value for Money
91/100
At roughly $11,000 when reviewed, TONEAudio called the MC1502 a “stone cold bargain,” and Part Time Audiophile considered it practically a steal for its American-made construction, power, and longevity. One reviewer objected more broadly to the high prices being paid for contemporary high-end equipment, so the premium remains substantial even if the prevailing commentary finds it well justified.
Reviews & Sources
Professional reviews and sources for this product's Watt'n Potatoes analysis.
Online Reviews & Mentions
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Specifications
- FTC Power Output Rating
- 150 W
- Power Output per Channel
- 150 W into 2, 4 or 8 ohms
- Number of Channels
- 2
- Total Harmonic Distortion
- 0.5% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20kHz<0.20% at 1W, 20Hz to 20kHz
- S/N below rated output
- 112dB
- Dynamic Headroom
- 1.2dB
- Damping Factor
- >18
- Rated Power Band
- 20Hz to 20kHz
- Frequency Response
- +0, -0.25dB from 20Hz to 20kHz+0, -3dB from 10Hz to 70kHz
- Remote Power Control
- Yes
- Multi-Channel DB25 Cable
- N/A
- Speaker Binding Post Type
- Patented Solid Cinch™ Speaker Binding Posts
- Circuit Configuration
- Unity Coupled
- Circuit Design
- Vacuum Tube
- Mono Bridge
- No
- Mono Parallel
- No
- Output Type
- Unity Coupled Output Transformer
- Meters
- No
- Meter Light Switch
- N/A
- Balanced Input
- 2
- Front Panel
- N/A
- Illumination
- Small Signal Tubes: Green, Natural
- Chassis Style
- Polished Stainless Steel
- Unit Dimensions (W x H x D)
- 18-1/4" (46.4cm) x 10-1/4" (26cm) (including feet) x 21" (53.3cm)
- Unit Weight
- 118 lbs (53.5 kg)
- Shipping Weight
- 135 lbs (61.2 kg)
Manufacturer's Description — McIntosh Labs
- Type: Vacuum Tube
- 150 Watts x 2-Channels
- Unity Coupled Circuit Output Transformers
- Sentry Monitor™, Solid Cinch™ speaker binding posts
The MC1502 Vacuum Tube Amplifier is a stereo amplifier designed for home audio and home music systems that produces 150 Watts per channel. It is the direct replacement to our award winning MC2152 Limited Edition 70th Anniversary Vacuum Tube Amplifier, which was released in celebration of our 70th Anniversary that occurred in 2019. The new MC1502 has identical audio specifications and sound reproduction performance of the heralded MC2152 but in a more customary McIntosh design.
The MC1502 shares the timeless styling of our classic MC275 Vacuum Tube Amplifier. As the MC1502 has twice the stereo power rating of the MC275 (150 Watts vs. 75 Watts) and is physically larger, in many ways it can be considered the MC275's big brother. And while a pair of MC275s can be run in mono to achieve the 150 Watts per channel output of the MC1502, the MC1502 boasts a better signal-to-noise ratio of 112dB vs. 105dB for the MC275 pairing – producing an even quieter performance than the already quiet MC275.
The MC1502 is powered by eight KT88 output vacuum tubes, with four assigned to each stereo channel. It also has eight small signal tubes, consisting of four 12AX7A and four 12AT7 vacuum tubes; two of each of these vacuum tubes are dedicated to each audio channel. The 12AX7A vacuum tubes are for the Balanced and Input amps, while the 12AT7 tubes are for the Voltage and Driver amps. All the vacuum tubes are covered by a 12-gauge stainless steel wire cage with a black powder coated finish.
The KT88 vacuum tube sockets include Air-Pipe cooling at their bases to help facilitate long service life. The eight signal tube sockets have ceramic base construction with gold plated contacts, providing protection from atmospheric contamination. All the vacuum tubes sit atop the precision formed stainless steel chassis polished to a mirror finish. Our Sentry Monitor technology monitors the output current and shuts the amplifier off if it ever exceeds safe limits; the signal tubes will flash red if Sentry Monitor is ever activated.
Unlike many other amplifiers, the MC1502's full 150 Watts can be delivered to almost any pair of speakers regardless if they have 2, 4 or 8 Ohm impedance. This is thanks to our patented Unity Coupled Circuit output transformer technology – the same technology McIntosh was founded on in 1949. Two Unity Coupled Circuit output transformers flank the power transformer which is positioned between them. Each transformer is housed in a glass topped extruded enclosure that displays the wiring diagram for each transformer. Two fully spelled out vintage die cast aluminum name badges adorn two sides of the MC1502, while an abbreviated badge is centered between the Tube Lights and Power knobs.
Both balanced and unbalanced inputs are included to connect the MC1502 to your preamplifier and the rest of your home audio system. Our patented Solid Cinch speaker binding posts will securely connect your speaker cables to your speakers
An input and output for our Power Control technology allows other connected McIntosh components, such as preamplifiersCD playersturntables, or media steamers, to automatically turn on and off. Contact your local dealer to learn more.
Verified Dealers
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Authorized dealers for McIntosh Labs MC1502 2-Channel Vacuum Tube 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