Note that this is a discontinued product. You may want to visit the brand's page here to browse their newer products.
What reviewers think
Bloggers and YouTubers have tried this product—so we've summarized their strongest opinions below. Links to full reviews follow.
Product Strengths
- Incredible dynamic range and power, useful even at moderate listening levels
- Very quiet operation with a low noise level, reducing masked timbres and details
- Refined, punchy, and dynamic sound
- Very stable amplifier
- Magnificent sound stage
Product Considerations
- Big and heavy, making it difficult to move
- Runs pretty warm
- Can get very hot
Comparisons (according to reviewers)
- MC1502 feels bigger and offers a lower signal-to-noise ratio than the MC275
- MC1502 has a cleaner presentation than bridged MC275s
- MC1502 controls speakers with a conductor's precision, compared to solid-state amplifiers (MC462 or MC312)
- MC1502 is cleaner, clearer, more extended at the frequency extremes—especially the ultra lows—and has just as much dimensionality as the Qualiton APX-200
- McIntosh bested the Sonic Frontiers Power 3 monoblocks
Takeaway: The MC1502 provides lots of power and control while also sounding sophisticated, open, and lifelike. It is a well-built amplifier that combines the best of tube technology with user-friendly features.
All
MC1502
reviews

Manufacturer details
- 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
- 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
- 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)
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.
Brand highlights
Taking a step back to look at reviewers' thoughts of the brand's entire lineup—not just this product—what stands out most is the following:
- McIntosh products blend classic, retro aesthetics, reminiscent of their 1970s designs, with modern materials and cutting-edge internal components, offering a unique visual appeal.
- The brand's amplifiers are known for their substantial power output, often exceeding specifications, and their ability to drive a wide range of speakers across varying impedance levels due to their unique Autoformer technology.
- McIntosh offers a high degree of customization and control through features like multi-band equalizers, adjustable input sensitivity, and advanced settings accessible via dedicated apps or web interfaces.
- They distinguish themselves with a focus on long-term reliability and customer satisfaction, with products built to last for decades and supported by a dedicated dealer network.
Select products
MHT300
- Positioning: Positioned as a versatile home theater receiver in McIntosh's lineup, suitable for custom installations or standalone display.
- Description: Supports 8K/60Hz and 4K/120Hz video, making it ideal for modern home theaters. Unlike other McIntosh products, it offers 7.2 channel audio with expandability to 7.2.4, providing flexibility for future upgrades. This makes it perfect for users looking to integrate advanced video capabilities and immersive audio in a custom home theater setup.
MHA200
- Positioning: A compact, high-quality headphone amplifier designed for personal audio enthusiasts.
- Description: Uses vacuum tube amplification, delivering a warm and detailed sound that is distinct from solid-state amplifiers like the MC462. Its compact size and multiple impedance settings make it versatile for various headphone types.
MC462
- Positioning: A powerful stereo amplifier, offering robust performance for high-end home audio systems.
- Description: Features a Quad Balanced design with McIntosh Autoformers, providing 450 Watts per channel with low distortion. Compared to the MC1502, it offers a solid-state solution with increased dynamic headroom.
MC1502
- Positioning: A high-power vacuum tube amplifier, ideal for audiophiles seeking classic tube sound.
- Description: Delivers 150 Watts per channel using vacuum tubes, offering a rich, warm sound that contrasts with the solid-state clarity of the MC462. Its Unity Coupled Circuit ensures consistent performance across various speaker impedances.
MC901
- Positioning: A unique dual mono amplifier, combining both vacuum tube and solid-state technologies.
- Description: Integrates a 300 Watt vacuum tube amplifier with a 600 Watt solid-state amplifier, providing the best of both worlds for bi-amping loudspeakers. This hybrid approach is unlike any other McIntosh product.
MC21KW
- Positioning: A flagship monoblock amplifier, representing the pinnacle of McIntosh's power amplification.
- Description: Delivers 2,000 Watts of power, making it suitable for the most demanding audio setups. Its tri-chassis design and advanced technologies like Autoformer and Power Guard set it apart from other amplifiers.
Our take on the brand
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Used
McIntosh
What if you spend more?
Our summary
Product Strengths
- Delivers 350 watts into 2-ohm, 4-ohm, or 8-ohm loads
- The design has a purity that is quite amazing
- Effortless power
- Soundstage is big
- Transparent
Product Considerations
- Not necessarily suitable for pairing with extremely cold sounding, sterile or bright speakers
Comparisons (according to reviewers)
- MC3500 is more open and airy, with base not as hard fisted, compared to Krell KSA 250
- It compares with brands like soulution, big Audio Research, and CH Precision, but at a lower cost
Takeaway: The MC3500 is an impressive amplifier that delivers a natural and pure sound, able to drive almost any speaker. If you're in the market for a McIntosh amp, this is the one that makes music sound pure, simple and unadulterated.
Video review
Our take on the brand
Our summary
Product Strengths
- 'Dynamic', 'extended', and 'smooth, yet revealing' performance
- Makes everything sound more real, providing a deeper understanding of the music
- Brings the listener closer to the essence of the original performance
Product Considerations
- Might sound a bit 'tight' when brand new, out of the box
Takeaway: The REX 3 seems to be a high-quality product that offers a very real and engaging music listening experience. It could be worth buying if you want to get closer to the heart of the music.
Video review
Our take on the brand
What competes at this price?
Our Summary
Product Strengths
- Fast response, with detail, and a warm tube sound
- Picks up detail with speed when playing Hi-Res digital content
Product Considerations
- Lacks sound stage depth/width, power, and feel compared to the reference system (vintage MC275 amplifiers)
- Super tweeters seemed to be sleeping—as if there was no data provided at that frequency
- Lacks a big window of performance, energy, and feel, providing a smaller window of performance albeit nice with a tube-like sound
- Bass with the MC2301s was starving when compared to the 275's
Comparisons (according to reviewers)
- Vs vintage 1960s MC275: MC2301 lacks sound stage depth/width, power, and feel, a full rich lush enveloping sound, and energy that stirs emotion
- Vs later generations of the MC275: MC2301 would be superior
Takeaway: If you don't have access to vintage MC275s, the MC2301 could be a good option, providing a tube-like sound with detail and speed. McIntosh should look back and reconsider past designs.
Video review
Our take on the brand
Our Summary
Product Strengths
- Pure sound, free of coloration while retaining musical detail, allows a graceful and effortless listening experience
- Natural and tangible sound due to accurate reproduction of details, creates a believable presentation
- Solid and controlled bass performance, unusual for a 300B single-ended triode amplifier
- Excellent sense of touch and tactile sound, making instruments like plucked strings and bowed violins sound very convincing
- Wide and deep soundstage with good 'air', providing a transparent and 'hear-through' sound, especially with complex music
Product Considerations
- Careful matching with partnering equipment is required, especially speakers with high efficiency
- Relatively low overall gain requires a source with a high output voltage
- Output transformer links need to be correctly set for speaker impedance, requiring dealer assistance
- Some reviewers found the top end sounding a bit rolled off before use of appropriate high efficiency speakers and source gain settings
- Changing the EL803S driver valves requires carefully matched pairs supplied by Thöress
Comparisons (according to reviewers)
- Vs Shindo Haut-Brion/Corton-Charlemagne, Thöress has more treble extension and transparency, Shindo has better upper-bass/lower-midrange substance and body—and more drive
Takeaway: The Thöress SE-300B offers a supremely musical and detailed listening experience with a focus on accuracy and sonic purity. When paired with the right speakers, this amplifier could be an excellent choice to bring out the best in music.
Video review
Our take on the brand
Our Summary
Product Strengths
- Delivers an incredibly rich, flavorful midrange and a sweet, relaxed treble
- Has a more sophisticated presentation than the utilitarian bent-metal chassis sported by most integrated tube amps on the market, and the smooth lines of the chassis help the amp stand out from the crowd
- Has a clever tube cage design with a clear Plexiglass front panel that delivers an unobstructed view of the tubes and is easy to install and remove
- Is seriously quiet, and there was effectively zero noise through any of the speakers
Product Considerations
- Can sound wildly different, depending on the impedance of the speakers
- The four slightly squishy feet underneath the amp may cause stains
- The power switch is on the rear of the chassis, which may be problematic if installing the amp in a cabinet with limited access
- Needs a good 20 minutes to warm up, and on initial startup, the amp sounded a bit thin, bright, and constipated, but after one album, it opened right up
- Limited power output (15Wpc) may not be sufficient for all speakers or listening preferences, especially when wanting to play music very loud
Takeaway: The Fezz Audio Lybra 300B is a well-designed tube amplifier that delivers a rich and flavorful sound. It can bring out the best in your speakers, offering clarity and great sound.
Video review
Our take on the brand
Our Summary
Product Strengths
- A variety of tubes can be used (45, 2A3, PX4, PX25, 300B, or 300B XLS) to produce different power outputs (1.5 to 22wpc)
- It can operate in single-ended (SE) or parallel single-ended (parallel SE) mode
- It is very adaptable—allowing for changes to input tubes and 5AR4 rectifiers to alter the amp's sound
- Built-in bias meters and pots allow for re-biasing when changing tubes
Product Considerations
- The right speaker load (high output impedance) is needed to perform optimally
- Single-ended amps shun negative feedback, which would lower their output resistance
- Speakers not well-suited for high output impedance amps may experience premature bass roll-off and a rising presence response
Takeaway: The TK2A3/300PSES-i Ref amplifier offers a lot of flexibility for tube rolling and sound customization. It is well-suited for high-efficiency speakers.
Video review
Our take on the brand
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