The Q Acoustics M40 Powered Micro-Tower Speakers in Black deliver genuine room-filling stereo sound from a remarkably compact 71cm-tall speaker system. With amplification built in, Bluetooth 5.0 with aptX HD, high-resolution USB and optical inputs, the M40 gives you a complete hi-fi system without the traditional stack of separate components.
- Powerful active stereo system – 2 × 50W RMS Class-D amplification with up to 2 × 100W peak output.
- High-resolution Bluetooth – Bluetooth 5.0 with aptX HD, aptX Low Latency, AAC and SBC support.
- C³ Continuous Curved Cone drivers – twin 125mm mid/bass drivers deliver deep, controlled bass and a detailed midrange.
- Hi-res wired audio – optical and USB connections support audio up to 24-bit/192kHz.
- Connect almost anything – ideal for TVs, computers, CD players, streamers and turntables with a built-in or external phono preamp.
- Compact 71cm micro-towers – full-scale stereo performance without the size or complexity of conventional floorstanding speakers and an amplifier.
For anyone considering a traditional amplifier and floorstanding-speaker combination, the M40 offers a compelling alternative. The amplification and digital processing are designed specifically around the speakers, while the compact cabinets make the system considerably easier to position in a typical living room.
NORTHXSOUTH BUYER’S BEST PICK
A brilliantly simple route into proper stereo hi-fi.
The M40 hits a particularly attractive sweet spot: it sounds and behaves like a serious pair of floorstanding speakers but removes the need to choose and accommodate a separate amplifier. They are powerful enough for a substantial living space, yet at only 71cm tall they are far less visually imposing than most conventional floorstanders.
We particularly like them for customers who want one high-quality system for music and TV. Bluetooth makes everyday listening effortless, while optical, USB and analogue inputs allow the M40 to grow into a much more capable hi-fi setup. The only notable omission is built-in Wi-Fi streaming or HDMI ARC, so we would add a dedicated network streamer if app-based multi-room or lossless network streaming is a priority.
Big Sound Without the Hi-Fi Stack
One M40 contains the amplification and electronics while the second speaker is connected using the supplied speaker cable. This keeps the system extremely simple: connect your source, plug the powered speaker into the mains and you have a full stereo system.
The built-in Class-D amplifier is rated at 2 × 50W RMS, with peak output of 2 × 100W. Because the amplification, DSP and loudspeaker drivers have been designed as one system, Q Acoustics can optimise the performance much more precisely than with an arbitrary amplifier-and-speaker combination.
C³ Continuous Curved Cone Technology
Each M40 uses two 125mm C³ Continuous Curved Cone mid/bass drivers alongside a 22mm tweeter. The C³ profile combines the bass performance of a more traditional straight cone with the improved midrange control of a flared design, helping the M40 produce substantial low-frequency weight while retaining clarity through vocals and instruments.
The system reaches down to a quoted 38Hz at -6dB, impressive for cabinets of this size, while a dedicated subwoofer output is provided if you want to extend the system even further.
Designed for Real Rooms
Q Acoustics uses several technologies developed for its passive hi-fi speakers inside the M40. Point to Point™ bracing reinforces key areas of the enclosure to reduce cabinet vibration, while Helmholtz Pressure Equaliser™ technology helps control internal standing waves.
An adjustable boundary EQ also lets the system compensate for whether the speakers are positioned in free space, close to a wall or near a corner. The powered speaker can be assigned as either the left or right channel, giving greater freedom when positioning the system around the nearest power socket.
Bluetooth and High-Resolution Audio
Bluetooth 5.0 supports aptX, aptX HD, aptX Low Latency, AAC and SBC. Compatible aptX HD devices can stream at up to 24-bit/48kHz, while connecting a computer through the USB Type-B input supports audio up to 24-bit/192kHz.
The optical input also supports up to 24-bit/192kHz and makes the M40 an excellent stereo upgrade for a television. Analogue RCA and 3.5mm inputs accommodate traditional audio sources, while a turntable can be connected provided it has a built-in phono preamp or is used with an external one.
Specifications
| Product | Q Acoustics M40 Powered Micro-Tower Speaker System |
| Finish | Matte Black |
| Product Code | QA7640 |
| EAN | 5036694051436 |
| System Type | Powered stereo micro-tower speaker pair |
| Enclosure | 2-way reflex / ported |
| Amplification | 2 × 50W RMS / 2 × 100W peak |
| Mid/Bass Drivers | 2 × 125mm C³ Continuous Curved Cone per speaker |
| Tweeter | 22mm |
| Frequency Response | 38Hz – 22kHz (-6dB) |
| Crossover | 2.5kHz |
| Bluetooth | Bluetooth 5.0 |
| Bluetooth Codecs | aptX, aptX HD, aptX Low Latency, AAC, SBC |
| Digital Inputs | Optical TOSLINK, USB Type-B |
| Analogue Inputs | Stereo RCA, 3.5mm |
| Maximum Digital Resolution | 24-bit/192kHz via optical and USB |
| Subwoofer Output | Yes – RCA |
| Dimensions with Stabilisers | 250 × 710 × 296mm (W × H × D) |
| Powered Speaker Weight | 12.4kg |
| Passive Speaker Weight | 11.8kg |
| Manufacturer Warranty | Up to 2 years for active speakers when registered, subject to Q Acoustics terms |
In the Box
Powered M40 speaker, passive M40 speaker, rear stabilisers, spike feet and covers, remote handset with batteries, 4m speaker cable, UK power cable, EU power cable and foam port bungs.
SEO Title: Q Acoustics M40 Powered Speakers Black | NorthXSOUTH
Meta Description: Q Acoustics M40 Powered Micro-Tower Speakers Black QA7640 with built-in amplification, aptX HD Bluetooth, 24-bit/192kHz audio and C³ drivers.
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