Product Details


"In the sum, the Monitor 40.3XD possesses that difficult to define but instantly apparent impression of authority on any and all kinds of music. From the simplest to the most demanding, from a whisper to far louder than you can stand, you have the sense there is no kind of music that it cannot take in easy stride and reproduce as truthfully, beautifully, and faithfully to the source as the current state of the art will allow." - Paul Sedour, The Absolute Sound February 2017

A new leap of supremacy in reference loudspeakers. 

The Monitor 40.3XD redefines the term ‘Reference Loudspeaker’. Built on the success of the multi award-winning M40.1, this new generation is the biggest leap forward in sonic supremacy since the design’s launch in January 1998. 

More efficient, more adaptable to a wide range of listening environments, perfectly balanced and more transparent and engaging, the M40.3XD takes the Harbeth sound to a new level. 
With its mesmerising and addictive  soundstage, Harbeth’s reference monitor produces a grand, dynamic and unforgettable sonic experience – far beyond conventional loudspeaker listening.



Transducer system 3-way vented: 300mm Harbeth bass unit; 200mm RADIAL2  mid; 25mm Ferro-cooled soft dome tweeter
Freq. response 35Hz-20kHz +/-3dB free-space, grille on, smooth off-axis response
Impedance 6-8 ohms - easy to drive
Sensitivity 86dB/1W/1m
Amp. suggestion Works with a wide range of amplifiers from 35W/channel.
Power handling 650W programme
Connector Two 4mm gold-plated binding posts for wires or plugs
Dimensions (hxwxd) 750 x 432 x 388mm (+12mm for grille and binding posts)
Finish Rosewood, Eucalyptus
Space needs Ideally free-space away from walls.
Stands To bring ears level with tweeters. (Tweeter: 660mm up from cabinet base)
Weight 38kg each
Packing Single speaker per shipping carton

View More