roksponsmallOctober was a real whirlwind of a month, there were Hifi Shows including Hifi Show Live Windsor and The Indulgence Show plus a huge amount of news and we reviewed gear ranging from £89 IEMs to a £32,000 Power Amplifier.  Just in case you missed anything, here is a round up of what happened last month… More »

roksponsmallMola Mola’s Makua pre and Kaluga power amplifiers are personally introduced by their designer Bruno Putzeys at the show’s Lancaster 4 suite Hifi Show Live, Windsor, UK, 3pm Saturday 29th and 3pm Sunday 30th October 2016. More »

roksponsmallAbsolute Sounds, UK distributor of high-performance audio equipment will be hosting three rooms at The Hifi Show Live which takes place this weekend (29th-30th October) at the Beaumont Estate, Old Windsor. More »

roksponsmallThe Progression mono amplifier is the largest and most powerful amplifier that the company has made, delivering 500 watts into 8 ohms, doubling to 1,000 watts into 4 ohms and doubling again to 2,000 watts into 2 ohms. More »

roksponsmallWilson Audio have today released the final prototype pictures of their huge new loudspeakers the Wilson WAMM Master Chronosonic. Wilson Audio say that these are Dave Wilson’s ‘Magnum Opus’ and have taken five years of intense research.
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roksponsmallThe concept of an integrated amplifier that embodies the same ethos, musical and sonic qualities as Gryphon Audio Designs’ most esoteric offerings, but at a fraction of the cost, is clearly an attractive proposition . As far back as April, 2009, Gryphon introduced the original Atilla, in continuous production until 2016, the Atilla had a long run. In the interim period, Gryphon has made advances in the critical fields of circuit topology and parts design and selection with the evolution of the Pandora preamplifier and Mephisto power amplifier. Now, drawing  on their experience with these reference level components, Gryphon Audio Designs presents the next generation Atilla, the Gryphon Diablo 120.

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LAMM Industries, of Brooklyn, New York have announced a new version of their L2 Reference preamp (pictured), the L2.1 Reference, which is going to become commercially available in October 2016. The L2.1 Reference employs a pure class A operation from input to output, with no overall feedback at any stage; all stages, including high current output buffers, are single-ended. Also featured are specially selected high voltage super linear MOS-FETs in the signal path and TKD stepped potentiometers for volume control. The preamplifier’s audibly neutral power supply features a choke contained filter, a full-wave vacuum tube rectifier and vacuum tube voltage regulator which, say LAMM, ‘allow it to virtually eliminate the hum and buzz and, ultimately, to ensure the authenticity of the essence of sound throughout the entire dynamic range without any colouration’. Other features include 3 inputs; one tape/home theatre processor loop; output signal phase switch; balanced and single-ended outputs; protection circuitry designed to enable manual muting of the output signal; and built-in remote on/off for LAMM power amplifiers.


In a nutshell, the L2.1 Reference includes the following upgrades and modifications as compared to the L2 Reference. Increased immunity to unwanted radio frequency interference propagated via both radiation and conduction over signal lines & AC power systems. Certain modifications in protection and time delay circuitry. Improved signal/noise ratio. Replacement of a number of critical components with newly available types of better quality and utilisation of a technologically new type of pc-board with gold-plated traces and through-holes. The preamplifier parts like military-grade DALE/VISHAY metal-film resistors, RCD wire-wound resistors, TKD 41-step volume control potentiometers, BOURNS multi-turn potentiometers, VISHAY electrolytic capacitors, ELECTROCUBE, EPCOS and RIFA/KEMET film capacitors; HAMMOND chokes, god-plated NEUTRIC connectors, and military-grade low-noise long-life vacuum tubes. The L2.1 Reference also features a custom-designed super-low noise power transformer.

Retail price is likely to be around 22,000 US$


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YG Acoustics has announced its latest creation, Sonja™ XV. Sonja™ XV is an extreme, four tower version of Sonja™, created to celebrate YG Acoustics™’ upcoming 15 year anniversary (2002-2017). It combines everything that YG Acoustics™ knows about speaker design, and incorporates several next generation technologies that cannot be found elsewhere. Handmade in the USA, innovations include, a breakthrough tweeter made in-house, and proprietary bass inductors.


The bass, mid bass and mid range units are made in-house using YG Acoustics™’ proprietary BilletCore™ technology: uniquely, the drivers are precisely machined out of massive slabs of aircraft grade aluminium. A pair of Sonja™ XV utilises a total of 18 BilletCore™ drivers. The brand new BilletDome™ tweeter is YG Acoustics™’ most complex mechanical invention to date: a resonance free soft dome is supported by a stiff, light airframe machined from aluminium billet. The air frame weighs a mere 30 milligrams, but its critical sections are up to 14 times thicker than a typical hard dome. Finally, a tweeter that combines the best of both hard and soft The tweeter’s motor is YG Acoustics ForgeCore™ system: in-house CNC cutting introduces 3D geometries into the magnet system. YG Acoustics™ crossover circuits are all created using proprietary software developed entirely in-house. DualCoherent™ technology provides the best frequency response and relative phase available. Sonja™ XV’s bass crossover uses a brand new technology: ViseCoil™ inductors are CNC wound in-house, then encased in a vice-like milled structure to eliminate vibration and tighten tolerances. Residual loss is reduced by 24%, and linearity is improved by 60%. The result is better control over the woofers, for greater bass impact, and an easier job for most amplifiers. Sonja™ XV’s mid and tweeter crossover uses ToroAir™ technology: in-house CNC wound toroidal air-core inductors eliminate cross talk. Sonja™ XV’s cabinet is constructed of precision machined aircraft grade aluminium alloy. The multi layered structure is optimised for each module’s specific frequency range. FocusedElimination™ anti-resonance technology keeps mechanical losses low, by combining the minimised turbulence of a sealed design with the low friction otherwise associated with enclosure free concepts. YG Acoustics™ speakers are not voiced. All measurements are verified using extensive listening tests, but the speakers are not artificially manipulated.

YG Acoustics say that their speakers ‘simply convey the recording – nothing more, nothing less. The end result: Sonja™ XV is the closest that we has ever come to the natural sound of a live performance. It will be heard by few and attained by even fewer, but those who hear it will likely echo the statement that YG Acoustics™ President Yoav Geva made upon finishing his masterpiece: “From now on, when I listen to music, I want it to be either live or with Sonja™ XV”. ‘

Existing pairs of YG Acoustics™ Sonja™ can be expanded to Sonja™ XV, without the need to replace the speakers. Sonja™ XV, in addition to its two channel (stereo) performance, is also fully compatible with multi channel audio and home theatre systems.



±1 dB in the audible band

±5° relative phase throughout entire overlap

Exceptional pair matching

Usable output extends from below 20 Hz to above 40 kHz


A four-way, four tower system with a total of 20 drivers per pair of speakers

BilletCore™ ultra high rigidity woofers, mid-woofers and mids

BilletDome™ ultra-low distortion tweeter, unique to Sonja™ XV


Sonja™ XV is fully passive

Proprietary DualCoherent™ crossover at 65 Hz, 337 Hz and 1.75 kHz

Designed using software developed in house ViseCoil™ bass inductors reduce residual loss and improve linearity, for greater bass impact and an easier job for most amplifiers

ToroAir™ mid and tweeter inductors eliminate cross talk


88 dB / 2.83 V / 1 m 2π anechoic


4Ω nominal, 3.5Ω minimum


4 towers, each 179x43x72 cm (70x17x28”) HxWxD


4 towers, each 210 kg (463 lbs) per channel unpackaged

Shipping weight of a pair is 1.3 tons


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