Serhan Swift's mu2 Mk II follows the impressive original iteration released by the talented antipodean duo under the Brigadiers Audio brand in 2018. Now, Chief Loudspeaker Designer Brad Serhan and Engineering Director Morris Swift not only have their names on the latest version, but they sign each one before it leaves for its new home. StereoNET was proudly the first UK publication to review the mu2, and we look forward to repeating the exclusive opportunity with the MkII very soon.

Serhan Swift states that they've paid particular attention to how energy is dissipated while keeping vibration to an absolute minimum because, as most will already be aware, these not only result in extraneous sound output but also their effect on the various components, including those in the crossover network, causes distortion.

The result of their research homed in on cabinet materials and construction. Moreover, implementing mechanical isolators for mounting drivers and crossover components. The upshot is that all the individual elements - cabinet, woofer, tweeter, crossover - have been carefully re-examined and significantly improved, even where originally many thought no further improvement was possible.

Now you will find constrained layer damping material used that's custom manufactured for the mu2 by Les Davis Audio. Additionally, while the woofer and tweeter may look the same as the previous model, both have been improved with an even flatter response, smoother roll-off, and lower distortion says the maker.

Furthermore, enhancements are found with to the hand-wired, point-to-point crossovers (separate for bass and treble) that are silver soldered onto 5mm thick high-density substrates. After listening tests over thousands of hours and measurements claimed, we are told that the crossover region and on-axis to off-axis transition are even more seamless and difficult to detect.

We are reliably informed that the new multi-layer cabinet construction now employs additional layers of differing materials, carefully chosen for composition and thickness, to further reduce cabinet noise (vibration), energy storage and colouration, along with greatly strengthened bracing.

Serhan Swift found the optimum drivers for each 7.8kg mu2 Mk II to be a 5-inch bass-midrange woofer and 1-inch ring-radiator tweeter belonging to the premium Revelator series manufactured by the renowned Danish driver specialist Scan-Speak. These drivers are also found in much more expensive speakers from high-end companies with prices to match. So, using the same drivers in a speaker at the Serhan Swift mu2 Mk II's price is generally unheard of.  

After experimentation with crossover configurations, we're told that a high-order crossover featuring Solen premium quality air-core inductors, polypropylene capacitors, and non-inductive resistors was ultimately chosen. This allows for steeper slopes, keeping the drive units in their respective "power bands" while minimising out of band distortion. Whilst this increases component cost dramatically, we are promised that the resulting audible benefits are undeniable, along with a claimed 45Hz-30kHz in-room response. Sensitivity is quoted as being 84dB/1m/2.83 volts with nominal impedance rated at ~6 ohms.

The Cardas speaker terminals are high purity copper with rhodium plating.  Again, chosen for their superior performance, reliability, and longevity - it is this attention to detail that impressed us with the original iteration.

Serhan Swift says that all their hard work culminating in the mu2 Mk II takes detail and resolution to yet another level. Furthermore, it makes the spatial presentation even more realistic.

The Serhan Swift mu2 Mk II is available now in a high-quality matt black finish or matt white finish for an SSP of £6,499.

We can't wait to settle in with a pair and a robust Australian Shiraz very soon, so stay tuned!

Visit Serhan Swift for more information