• Qa7640-2
  • Qa7640-3

Click photos to enlarge


Q Acoustics M40 Series - Ultra-compact micro-tower design speakers


  • Ultra-compact micro-tower design
  • 2 × 100 watts of built-in amplification
  • Bluetooth 5.0 with aptX HD
  • Continuous Curved Cone
  • Numerous connectivity options


Limited stock - normally ships within 5 working days

Full Details

Q Acoustics M40

The most convenient and cost-effective way to fill your home with full-size, powerful and immersive sound without filling your home with big, imposing loudspeakers. These quality micro-towers have the flexibility to support numerous wired and wireless sources of music.

Ultra-compact micro-tower design

At just 71cm high, these petite pillars are compact and discreet. They’ll fit seamlessly into any interior space, and their high-quality finish – available in Black, White and Walnut - will complement any home decor vocabulary. And they do so without compromising on the established Q Acoustics strengths of powerful, precise and engrossing sonic performance.

A system for every setting

M40 is designed to serve up extraordinary high-resolution stereo sound no matter the setting. It’s ideal as a main audio system in settings where space is at a premium, it’s perfect as a step on the hi-fi ladder for those who don’t want a component-heavy system of hi-fi separates, and it’s the ultimate second-room system. There are no circumstances in which the M40 micro-tower powered audio system isn’t the correct answer.

High-resolution wireless stereo experience

Specified to meet every eventuality, the M40 is able to deliver stunning stereo sound no matter where it’s coming from. On board Bluetooth® 5.0 provides rock-solid wireless connectivity and is compatible with aptX HD and aptX Low Latency technology - so high-resolution sound (up to 24bit/48kHz) can be streamed from any compatible device such as a smartphone, laptop or tablet- and even appropriately specified televisions. Connect the M40 to a computer via its USB input and 24bit/192kHz resolution is available.

A host of connectivity options

M40 has enough inputs to let your games console, your TV, a set-top box, pre-amplified turntable or any other source of sound that takes your fancy join in the high-resolution audio action. You can even attach a subwoofer in case you really want to shake the room. Whatever you want to listen to, the M40 can deal with it, in style. 200 watts of Class D amplification provides the impetus. All you need to do is cue up your favourite tunes and let the M40 bring your music, movies and games vividly to life.

Special grille design

Particular attention has been given to the M40 grille design. Fixing the grille to the baffle, rather than be removable, allows for added strength derived from the baffle and significantly reduces the grille’s structure, particularly around the drivers. The result of the M40’s open grille design minimises disruption of sound dispersion patterns, while reducing reflections for a smoother sonic performance.




  • Supply Voltage 100V-240 VAC, 50-60 Hz

Power Consumption

  • Standby <0.5 Watts
  • Typical use ~10 W/li>

Amplifier Performance

  • Peak Power Output 2 x 100 W
  • Rated Output Power (4 Ohms) 2 x 50 W RMS
  • THD @ Rated Power <0.7%


  • Enclosure type 2-way reflex (ported)
  • Mid/Bass unit 2 x 125 mm (5.0 in)
  • Treble unit 1 x 22 mm (0.9 in)
  • Crossover frequency 2.5 kHz
  • Frequency Response (-6dB) 38 Hz – 22 kHz


  • Analogue (2 x Phono) Sensitivity 700 mV RMS, Max. input level 2.15 V RMS
  • Analogue (3.5mm Jack) Sensitivity 400 mV RMS, Max. input level 1.25 V RMS
  • Optical (S/PDIF) TOSLINK (Maximum resolution: 24 bit/192 kHz)
  • USB Type B connector (Maximum resolution: 24 bit/192 kHz)


  • Bluetooth® version 5.0
  • Supported codecs aptX™, aptX™ HD, aptX™ Low Latency, SBC, AAC


  • Sub out (Phono) Max. Output 1 V RMS


  • (W x H x D) 250 mm x 710 mm x 296 mm (10” x 28” x 11.7”) with stabilisers


  • Amplified speaker 12.4kg (27 lb 5 oz)
  • Passive speaker 11.8g (26 lb)