McIntosh MA2375 Integrated Amplifier Review
Here’s our review of the new McIntosh MA2375 integrated amplifier:
The McIntosh MA2375 arrives at a time when almost every new integrated amplifier seems determined to do more. Streaming platforms, apps, DACs and digital inputs have become standard, even at the very top of the market.
The MA2375 goes in the opposite direction.
There is no streaming platform, no built-in DAC and no digital circuitry in the signal path. Instead, McIntosh has built a completely analogue integrated amplifier around twelve vacuum tubes, a configurable phono stage and a pair of substantial output transformers.
It is also significant for another reason. The MA2375 is McIntosh’s first fully valve-based integrated amplifier in more than a decade, following the discontinued MA2275. Rather than combining a valve preamplifier with a solid-state power section, as McIntosh does in products such as the MA352, the MA2375 keeps valves at the heart of both stages.
At £16,899, it is clearly not intended to compete on features per pound. The question is whether a deliberately analogue amplifier still makes sense at this level in 2026.
Buy McIntosh MA2375 at Premium Sound — £16,899
Classic McIntosh Design
Visually, there is no mistaking the MA2375 for anything other than a McIntosh.
The polished stainless-steel chassis is topped by a black glass fascia, with the company’s familiar blue watt meters positioned either side of the valve array. Four large KT88 output tubes sit towards the rear beneath a removable protective cage, while the smaller preamplifier valves occupy the front section of the chassis.
McIntosh has even turned the warm-up process into part of the visual experience. When the amplifier is first switched on, the preamplifier valves illuminate orange. Once the amplifier has reached operating temperature and is ready to play, that illumination changes to green.
It is a small detail, but one that suits an amplifier designed to make the act of listening feel more physical and deliberate.
Physical is certainly the right word here. The MA2375 weighs just over 42kg, so this is not an amplifier you will want to reposition regularly.
Twelve Vacuum Tubes
The twelve valves are divided between the preamplifier, driver and power stages.
The preamplifier section uses two 12AX7A and two 12AT7 valves, while a further four 12AT7 valves act as drivers for the four KT88 output tubes.
KT88s are particularly well suited to an amplifier like this because they can provide the scale and current delivery required for real-world loudspeakers while retaining the tonal qualities people associate with valve amplification.
The result is a rated output of 75 watts per channel.
McIntosh also takes a different approach to construction than some traditional boutique valve manufacturers. Instead of relying entirely on point-to-point wiring, the MA2375 uses computer-designed dual-layer glass-epoxy circuit boards, ceramic valve sockets and gold-plated contacts.
That engineering contributes to a quoted signal-to-noise ratio of 95dB, an unusually strong figure for a full valve amplifier.
Ventilation Matters
Twelve valves also mean heat.
McIntosh specifies approximately 19 inches, or 48cm, of vertical clearance above the amplifier to allow sufficient airflow.
That makes placement important. The MA2375 is not designed to be hidden inside a tightly enclosed cabinet or sideboard. It needs an open rack or similarly well-ventilated position where heat can escape freely.
Given both the weight and the thermal requirements, this is an amplifier worth planning a system around rather than simply dropping into whatever space is already available.
75 Watts Into 4, 8 or 16 Ohms
One of the most useful aspects of the MA2375 is the way its output stage interacts with different loudspeakers.
McIntosh uses its Unity Coupled Circuit output transformers between the KT88 output stage and the loudspeaker terminals. This allows the amplifier to deliver the same rated 75 watts per channel into 4-, 8- or 16-ohm loads.
Dedicated speaker terminals are provided for each impedance.
That makes matching the amplifier considerably simpler than with some valve designs, where available output can change significantly depending on the impedance of the connected loudspeaker.
Seventy-five watts is still seventy-five watts, however.
With reasonably sensitive loudspeakers in a normal listening room, the MA2375 should provide ample headroom. But very inefficient loudspeakers in a large room, particularly at high listening levels, may be better partnered with one of McIntosh’s more powerful hybrid amplifiers.
The MA2375 is less about maximum output and more about matching the right amplifier to the right system.
Why Going Fully Analogue Still Makes Sense
The lack of digital circuitry may initially look like an omission, but it is also one of the MA2375’s strongest arguments.
Streaming platforms change. Control apps are replaced. Digital formats evolve. DAC technology moves forward.
An analogue amplifier does not have those same concerns.
There is no streaming board or digital conversion stage inside the MA2375 that may feel obsolete in five or ten years. Its fundamental purpose is unlikely to change: accept an analogue signal, amplify it and drive a pair of loudspeakers.
For someone buying an amplifier with the intention of keeping it for decades, that simplicity has real value.
A Serious MM and MC Phono Stage
The built-in phono stage is equally important to that analogue-first philosophy.
It supports both moving-magnet and moving-coil cartridges, with adjustable gain, capacitance and resistance loading.
That flexibility means the phono stage can be configured around the cartridge rather than forcing the cartridge to work around a fixed input.
For many vinyl-based systems, it also removes the immediate need for a separate outboard phono preamplifier.
Considering the kind of turntable and cartridge likely to be paired with an amplifier at this level, that is much more significant than simply ticking a phono-input box on the specification sheet.
Subwoofer Output and Home Theatre PassThru
The MA2375 may be traditional in its signal path, but it is not particularly old-fashioned when it comes to system integration.
A dedicated mono subwoofer output makes it straightforward to add an active subwoofer without resorting to speaker-level connections.
There is also Home Theatre PassThru.
That allows the MA2375 to form part of a larger cinema system, with an AV processor controlling the front left and right channels during film playback. Switch back to music, and the McIntosh returns to operating as a conventional standalone stereo integrated amplifier.
For anyone trying to combine a serious two-channel system with home cinema in the same room, that is an extremely useful feature.
How Does the McIntosh MA2375 Sound?
The first impression is scale.
The MA2375 presents music with a sense of depth and height rather than simply placing everything on a flat line between the loudspeakers. Voices and instruments occupy clearly defined positions within the soundstage, with enough separation to make complex recordings easy to follow.
Vocals are a particular strength, with a natural and present quality that suits the full-valve architecture.
Bass is also considerably tighter than the stereotype of a valve amplifier might suggest. There is weight, but without the loose or exaggerated low end sometimes associated with older tube designs.
Perhaps most importantly, the amplifier is quiet.
That low noise floor gives subtle information room to emerge naturally rather than forcing the listener to search for detail.
Five-Band Analogue EQ
McIntosh has also included a five-band analogue equaliser.
For some purists that may initially sound unnecessary, but it can be genuinely useful for dealing with room behaviour or recordings that need a small amount of tonal adjustment.
And if you do not want it in the signal path, it can simply be bypassed.
That gives the owner a choice between completely untouched playback and subtle analogue correction when it is useful.
Protecting the Valves
Valve ownership inevitably raises questions about reliability and protection.
The MA2375 includes two key McIntosh systems designed to address that.
Sentry Monitor provides fuse-free protection against short circuits and problematic operating conditions.
The Power Guard Screen Grid Sensor, or SGS, continuously monitors the KT88 output valves. If the amplifier is pushed towards conditions that could damage them, the system automatically reduces the input signal.
That makes the MA2375 much less intimidating to live with than the image of a traditional valve amplifier might suggest.
Headphone Listening with HXD
The headphone output also deserves attention.
It is fed through the valve preamplifier stage, which means headphone listening retains much of the character associated with the main signal path.
McIntosh also includes its HXD crossfeed technology.
Instead of presenting each ear with a completely isolated left or right channel, HXD introduces a controlled amount of information from the opposite channel. The intention is to produce a more speaker-like presentation, reducing the hard left-right separation that headphones can sometimes create.
McIntosh MA2375: Our Verdict
At £16,899, the MA2375 is obviously not an amplifier for everyone.
It is aimed at a much more specific listener.
Someone who wants streaming built into the amplifier itself should look elsewhere. The same applies to anyone who needs huge amounts of power for inefficient loudspeakers in a very large room.
But for an analogue-focused system, the MA2375 makes a compelling argument.
You are getting a full valve preamplifier and power amplifier in one chassis, a configurable MM/MC phono stage, useful subwoofer and cinema integration, sophisticated valve protection and a design built around technology that is unlikely to become irrelevant simply because the digital world changes around it.
And that is really the point.
The MA2375 is not trying to be the most modern amplifier in its class. It is trying to be the amplifier you could still be listening to decades from now.
