Unity Audio Unveils Boulder MKIII

Unity Audio has unveiled the Boulder MKIII with a faster, more accurate detailed sound and greater SPL.

The new Boulder MK-III 3-way active monitor delivers a faster, more accurate detailed sound and extended bass response with a greater SPL than its Boulder MKII predecessor.

The MKIII model further redefines expected levels of sonic performance and accuracy for this truly world-class monitoring system and fits into any critical listening environment or scenario.


The new eye-catching surface of the precision built German Crystal Membrane is more than just an attractive design feature. Resembling the surface of a large crystal, the aluminium-foil stamping stiffens the aluminium dome, diminishing resonances and minimizing coloration, whilst improving power handling and dynamics. The voice coil design of the bass drivers results in an expanded range of the respective drivers by nearly an octave, down to 36Hz at -3dB.


The unique and exclusive centrally mounted compact Coaxial X-JET 5" mid-range driver and 50kHz folded ribbon tweeter design assures true point source phase accurate delivery across its entire frequency spectrum from 694 Hz to 50 kHz, eliminating phase rotation and frequency anomalies. The result is exceptional imaging and detail, significantly improved impulse and power control providing much improved dynamic range and an even frequency response and dispersion throughout the listening space. The X JET driver can be described as dynamic and detailed with depth and spaciousness over a broad listening area providing exceptional detail to beyond 50kHz. The concentrically located JET5 ribbon tweeter uses a unique folded ribbon technology providing a wide, smooth dispersion and a flat frequency response exceeding 50kHz.

The MKIII is now fitted with 2 x 300 watt Class D amplifiers with its own separate power supply specifically for the 2 x Crystal Membrane woofers whilst retaining its two original discrete custom Class A/B amplifiers with their own dedicated power supply for the Coaxial X-Jet mid-range / ribbon tweeter.

The Boulder MKIII delivers a life-like sense of scale and takes any performance in its stride offering high SPL figures with incredible effortless dynamics and transients. The MKIII provides a reduced stray magnetic field with higher efficiency, improved dynamics and smooth and even frequency dispersion.

www.unityaudioproducts.co.uk