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McIntosh C28
McIntosh C28
McIntosh C28
McIntosh C28
McIntosh C28
McIntosh C28

Description

The McIntosh C28 is a solid-state stereo preamplifier produced from 1970 to 1975, still among the most popular of historic American production. Featuring a robust and refined construction, it represents a reference for audiophiles seeking a vintage component capable of combining sonic transparency , dynamic control, and long-term reliability.

Each channel of the C28 is structured into four independent sections: a low-level amplifier , a high-level amplifier , dedicated active filters and an integrated headphone amplifier . The power supply is managed by common regulated power supplies , which guarantee operational stability and perfect uniformity between the two channels, an essential condition for a correct stereo soundstage.

The input range is particularly extensive and includes two MM phono inputs with adjustable sensitivity, a microphone input and several line inputs, ideal for integrating turntables, modern digital sources such as external DACs or network streamers , and tape recorders. The C28 also allows independent adjustment of the output level for the headphones and for a possible center channel, without interfering with the main volume.

For those wondering which vintage preamplifier to choose for an audiophile hi-fi system, the C28 offers a concrete answer: paired with historic power amplifiers like the McIntosh MC2105 or modern solid-state power amplifiers , it delivers a sound rich in detail, natural and faithful to the original recording. The distinctive aesthetic with its gold and black anodized front panel contributes to the allure that makes it one of the most sought-after vintage preamplifiers on the high-end used market.

Discontinued product, it maintains an excellent rating over time thanks to its careful mechanical construction and full compatibility with the McIntosh ecosystem of every era.

Specifications

Amplification type transistor
Stadio phono MM
Analog inputs 2 MM phono inputs, 1 microphone input, line inputs
Weight 11.34 kg
Year of production 1970
Frequency response 20 Hz – 20 kHz
Harmonic Distortion (THD) 0.1%
Rapporto S/N 78 dB (MM) / 90 dB (line)
Line input sensitivity 250 mV
Dimensions (WxHxD) 406 x 138 x 381 mm
Trim Gold and black anodized front panel
country of origin USA
Input impedance 2.5 mV (mic) / 2 mV (MM) / 250 mV (line) kOhm

About the brand

McIntosh is an American hi-fi icon, founded in 1949 by Frank McIntosh in Binghamton, New York. The brand positions itself in the luxury segment of the hi-fi market, representing excellence in audio electronics for discerning audiophiles who accept no compromises on the sound quality and aesthetics of their stereo systems.

The McIntosh story begins with a technological revolution: Frank McIntosh developed the first amplifier with Unity Coupled Circuit output transformers, a solution that eliminated the distortion typical of amplifiers of the time. This innovative philosophy has guided the company for over seventy years, cementing McIntosh's reputation as synonymous with excellence in high fidelity. The American brand has always pursued sonic perfection through a rigorous engineering approach, combining advanced proprietary technologies with an unmistakable design characterized by the legendary illuminated blue glass front panels and distinctive analog metering. The McIntosh corporate philosophy is based on three fundamental pillars: constant technological innovation, uncompromising build quality, and iconic design that makes each product instantly recognizable. Each component is designed and assembled in the United States following extreme quality standards, with particular attention to material selection and artisanal manufacturing processes that guarantee superior performance and long-lasting durability.

McIntosh's distinctive technologies are at the heart of the company's research. The Unity Coupled Circuit remains one of its most important innovations, allowing for a perfectly linear frequency response and virtually zero harmonic distortion. McIntosh output transformers are entirely handcrafted using ultra-pure copper wire and select magnetic cores, ensuring optimal power transfer and natural sound coloration. McIntosh's exclusive Autoformer technology ensures perfect impedance matching for any load, allowing McIntosh amplifiers to effectively drive any type of floorstanding or bookshelf speaker. Power Guard is a proprietary system that prevents clipping by simultaneously protecting amplifiers and speakers, while Sentry Monitor technology constantly monitors operating parameters and automatically intervenes in the event of anomalies.

The McIntosh product range covers every category of high fidelity, with a precise classification ranging from digital and analog sources to the most powerful power amplifiers on the market. The MA Series transistor integrated amplifiers represent the perfect balance between power and refinement, while the MA-V and MC Series tube integrated amplifiers offer the magic of tube sound with modern reliability. McIntosh pre- and power amplifiers are the ultimate solution for reference stereo systems, allowing for a modular configuration that can be customized to meet specific needs. The McIntosh turntable category offers complete solutions with matching tonearms and cartridges, while the CD/SACD/DVD players integrate the most advanced digital-to-analog conversion technologies for music reproduction faithful to the original artistic intentions.

McIntosh product series are distinguished by specific technical features and differentiated market targets. The MA Series includes integrated amplifiers from 50 to 350 watts per channel, all equipped with Autoformer technology and compatible with any load impedance. The MC Series power amplifiers reach power up to 1200 watts per channel, ideal for driving large floorstanding speakers or complex multichannel configurations. The C Series includes reference preamplifiers with dedicated MM/MC phono stages for high-end turntables, while the MCD Series offers digital players with proprietary 32-bit converters. The McIntosh source line also includes music servers and network streamers for listening to high-resolution files, always maintaining the quality standards that characterize the American brand.

McIntosh has received numerous accolades from the international audio press, with awards from prestigious publications such as Stereophile, The Absolute Sound, Hi-Fi News, and What Hi-Fi. McIntosh amplifiers are regularly ranked among the best hi-fi products, receiving excellent ratings for sound quality, construction, and design. Expert reviewers particularly appreciate the ability of McIntosh electronics to combine exceptional technical performance with unique emotional engagement, a characteristic that distinguishes the best high-fidelity components. Comparative tests consistently highlight the superior dynamics, three-dimensional spatiality, and natural tonal quality of stereo systems based on McIntosh electronics.

McIntosh's audiophile target audience includes music enthusiasts who seek absolute sonic excellence and are willing to invest in superior components. The price range is in the premium-luxury segment, with transistor integrated amplifiers starting at €6.000 up to pre-power systems exceeding €50.000. This pricing policy reflects the craftsmanship, proprietary technologies, and ongoing research that characterize every McIntosh product, making them lasting investments for discerning audiophiles.

McIntosh's Italian distribution is entrusted to selected specialized dealers who guarantee qualified advice and professional technical assistance. After-sales service includes specialized technical support, original spare parts, and preventative maintenance to maintain optimal performance over time. The Italian distribution network ensures national coverage with dedicated showrooms where you can try McIntosh products in optimized reference configurations.

Find out more on our blog

Integrated, Pre-Amplifier, or Receiver: A Guide to Choosing

When building a Hi-Fi system, choosing the right amplifier is one of the most important—and often confusing—steps. Integrated amplifier, preamplifier and power amplifier pair, receiver: three different philosophies, three ways of understanding sound and experience…

What is an integrated amplifier and why is it the point

The integrated amplifier is the most common solution in home Hi-Fi, and for good reason. It combines two essential functions in a single chassis: the preamplifier, which manages the sources, adjusts the volume, and shapes the audio signal, and the power amplifier, which amplifies the signal to drive the speakers. It's the natural choice for those who want a complete, efficient, and ready-to-use system without complications.

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FAQ

PREAMPLIFIERS

McIntosh
C28

Used-vintage
1.350 

Availability

Condition

Notes by Audiocostruzioni

Used product in excellent condition.

Without original packaging.