McIntosh MA2375 Vacuum Tube Integrated Amplifier

Pure McIntosh Tube Amplification Returns

The McIntosh MA2375 Vacuum Tube Integrated Amplifier marks the return of something special: McIntosh's first all-vacuum-tube integrated amplifier in more than a decade.

Unlike the hybrid MA252, MA352, and MA12000, the MA2375 is pure tube from preamplifier to power amplifier. It combines a vacuum tube preamp, KT88 output stage, sophisticated phono section, five-band analog equalizer, and modern system-control features in one beautifully crafted component.

Delivering 75 watts per channel, the MA2375 is designed for the listener who wants the unmistakable experience of a McIntosh tube system without building a separate preamp and power amplifier combination.

All-Tube From Input to Output

The MA2375 uses vacuum tubes throughout both major amplification stages.

Its preamplifier section employs two 12AX7A and two 12AT7 tubes, while the power amplifier adds four 12AT7 driver tubes and four KT88 output tubes.

Those KT88s produce 75 watts per channel of low-distortion tube power.

McIntosh's Unity Coupled Circuit Output Transformers interface the tube output stage with the loudspeakers, drawing on decades of McIntosh vacuum tube amplifier engineering.

This is not a solid-state amplifier designed to mimic tube sound. The MA2375 is the real thing.

Made for the Music Purist—Without Being Stuck in the Past

The MA2375 is intentionally all analog. There's no built-in DAC or network streamer.

Instead, McIntosh concentrates on the analog signal path while providing enough connectivity to accommodate a serious modern system. Streamers and DACs with analog outputs, CD players, tuners, and other sources can connect through its balanced and unbalanced inputs.

That approach also gives you the freedom to select or upgrade your digital front end independently without replacing the amplifier.

A Serious Phono Stage for MM or MC

Vinyl receives considerably more attention than a simple built-in phono input.

The MA2375's configurable phono stage accommodates both Moving Magnet and Moving Coil cartridges, allowing it to work with a wide range of turntable systems.

Adjustments include Gain, Capacitance, Resistance Loading, and RIAA equalization, giving you the ability to better optimize the phono section for your particular cartridge and setup.

For someone building an analog-focused system, this is one of the MA2375's strongest features. A high-quality turntable can connect directly without making an external phono preamplifier an automatic requirement.

Shape the Sound With a 5-Band Analog Equalizer

McIntosh also equips the MA2375 with a five-band analog equalizer.

Rather than relying on digital signal processing, the EQ operates in the analog domain and provides useful tonal adjustment for different recordings, speakers, rooms, and personal preferences.

For real-world listening, that's valuable. Not every recording is mastered perfectly, and not every room behaves perfectly.

The MA2375 gives you the ability to make those adjustments while maintaining its all-analog architecture.

Protecting the KT88 Output Tubes

High-performance tube amplification requires careful control, and McIntosh has incorporated technology specifically designed to protect the MA2375's KT88 output tubes.

Power Guard Screen Grid Sensor (SGS) continuously monitors tube current. If current rises beyond the appropriate operating range, the system dynamically adjusts the input signal to help keep the output tubes operating safely.

It's joined by Sentry Monitor, McIntosh's fuse-less short-circuit protection system.

The idea is simple: enjoy the qualities that make vacuum tube amplification special while applying modern McIntosh engineering to reliability and protection.

Headphones, Subwoofers and System Expansion

The MA2375 isn't limited to a traditional pair-of-speakers setup.

A dedicated subwoofer output allows a powered subwoofer to extend low-frequency performance, while an unbalanced preamp output provides additional options for external amplification or more advanced installations.

Headphone listeners get McIntosh's High Drive headphone amplifier with Headphone Crossfeed Director (HXD), providing a more natural, speaker-like presentation during private listening.

Power Control, Data Ports, Home Theater PassThru, RS232 control, and an included remote also allow the MA2375 to integrate into a larger McIntosh or professionally controlled system.

Classic McIntosh, With Tubes on Display

The visual experience is a major part of the MA2375.

Its polished stainless-steel chassis, exposed glowing vacuum tubes, black-glass front panel, and dual McIntosh blue Watt meters combine two of the brand's most recognizable design signatures in one component.

The meters provide the classic McIntosh look from the front, while the bank of glowing tubes makes the amplifier just as impressive viewed from above.

It's an amplifier designed to be part of the room rather than hidden inside a cabinet.

The Grid's Take on the McIntosh MA2375

The MA2375 fills an important spot in the McIntosh lineup.

If you want 200, 300, or 350 watts of power, McIntosh's solid-state and Hybrid Drive integrated amplifiers give you plenty of choices.

The MA2375 is about something different.

This is for the listener who specifically wants an all-tube McIntosh system—tube preamp, tube drivers, KT88 output tubes, and McIntosh output transformers—but wants it contained in one beautifully engineered component.

We particularly like the attention McIntosh gave the analog side. The configurable MM/MC phono stage, five-band analog EQ, balanced inputs, subwoofer output, and 75-watt tube output stage make this much more than a nostalgic amplifier.

Pair the MA2375 with the right speakers and a great turntable or streamer/DAC, and you have the foundation for a relatively simple but genuinely high-end music system.

At The Grid HiFi & Home Theater, we can help match the MA2375 with loudspeakers that make the most of its 75 watts of tube power, along with the right turntable, cartridge, streamer, DAC, and subwoofer for your system.