Monitor 40.3 XD


Monitor 40.3 XD



The result of a passionate and tireless quest for audio perfection. Built on the success of the global award-winning M40.2 40th Anniversary, this new generation Harbeth achieves a leap in performance delivery. Stunning realism, expansive bass and lifelike transparency delivers an ultimate experience for even the most critical listener.

Adaptable to a wide range of listening environments, accurate across the entire audio band, emotionally engaging and easy to drive, the M40.3 XD takes the acclaimed Harbeth sound to a new level.  

Prepare yourself for true musical indulgence like you have never experienced before.


Our cabinets are handmade and feature the finest veneers. Please note that veneers vary in both colour, shade and grain structure, particularly our Tamo Ash veneer.

*Not all finishes are available in all countries.





  • Transducer system: 3-way vented: 300mm Harbeth bass unit; 200mm RADIAL2™ mid; 25mm ferro-cooled soft dome tweeter

  • Frequency response: 35Hz - 20kHz ±3dB free-space, grille on, smooth off-axis response

  • Impedance: 6-8 ohms, easy to drive

  • Sensitivity: 86dB/1W/1m

  • Amplifier suggestion: Works with a wide range of amplifiers, suggested from 35W/channel.

  • Power handling: 650W program

  • Connectors: Two 4mm gold-plated binding posts for wires or plugs

  • Dimensions: 750 x 432 x 388mm (+12mm for grille and binding posts)

  • Finish: Cherry, eucalyptus, rosewood, tiger ebony.

  • Space needs: Ideally free-space away from walls.

  • Stands: Optimally to bring ears level with tweeters. (Tweeter: 660mm up from cabinet base)

  • Weight: 38kg each

  • Packing: Single speaker per protective carton

The big Harbeth, the Monitor 40, now the M40.3 XD is an entirely different experience. The top Harbeth speaker has the weight and the depth to play any kind of music, at any volume level you need. You can play Tool loud – and get into it. But these speakers do so much more

— Tone Publications