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During the four years of development for the Harmonizer, Claudio not only ran around with his measurement gear. He also called upon musical friends to act as guinea pigs and solicit their opinion on the performance of the Harmonizer under development. Among these friends were renowned singers and musicians from a famous Venetian opera house. When the product reached production status, Claudio dispatched the Harmonizer for CE certification tests. Often a CE certification is viewed as nothing more than a paid-for sticker stuck to the back but Claudio paid for the full Monty of which documented proof is readily available. These tests included non-ionizing radiation assessments. This checks for magnetic induction at 30cm from the cabinet both in standby and fully operational. With all the damping Claudio built in it shouldn't surprise that the worst rating he got was a mere 5% (4.6μT) of the allowable limit.
Other tests included humidity conditions which placed the Harmonizer in a 40°C oven at 90% humidity. Another safety test involved an impact hammer hitting the poor device wherever possible. From these test reports we also learnt that noise attenuation for the analog and digital outlets differs. The analog outputs are filtered from 1000Hz up and hit -40dB of attenuation at 100kHz. For the digital outlet attenuation starts at ~4,500Hz and reaches -42dB of attenuation at already 60kHz. Either filter continue to be active up to 30MHz. A few things are evident from these comprehensive CE regulation compliance tests. It's perfectly safe to use this device not just for humans but for all connected components which are protected from voltage peaks and power surges as well as from noise and DC riding atop the AC power line.

As we learnt much earlier, our mains outlets not only deliver 230 Volt AC at 50Hz but also DC and noise. Amongst the noise there’s actually a devotional Christian radio station as the previously reviewed Blue Horizons mains noise analyser made so abundantly clear via its built-in speaker. For a light bulb all this extra and free signal is okay. Not so for sensitive performance audio gear. As already mentioned, music signal results from the mains power modulating the audio signal. That modulating signal itself depends on the same mains signal through the power supplies of the other gear. As though this weren't complex enough, how about each component radiating electromagnetic noise which gets picked up by adjacent equipment to reinject into the power loop? When you think of it, joining the naysayers to diss power filters and high-grade power cords is tempting only to the wallet really. It leaves the metaphorical elephant in your listening room to wreak havoc.

Before listening commenced, we took our trusty Blue Horizon power-line analyzer and plugged it into a spare outlet of the passive Furutech outlet multiplier which connected to the Harmonizer. Instead of finding ourselves regaled by Hail Maries buried in static haze as we were when plugging into an un-Harmonized outlet, we were treated to a triple zero readout for —kowabunga!—zero distortion. Living up to its title as a powerline cleaner, the fully passive Harmonizer successfully removed all of the noise our analyzer is capable of measuring. Impressive!

Time to let our brains as the true musical pleasure centers determine whether harmonizing or synchronizing current and voltage was musically enacted in any meaningful way. Again, all analog amplification connected to the analog outputs with the expansion of an additional passive power bar to add outlets whilst the switched power supply of the turntable fed from the digital output. The first record to cue up was The Band’s Last Waltz, a 1978 issue of the legendary group's farewell concert from two years earlier. As with many if not most 70s' albums, quality is exceptional to match the inspired performances.

Next to The Band a host of guests like Neil Diamond, Joni Mitchell, Neil Young, Dr. John and Muddy Waters pay homage to the musicians who influenced them and would entire generations of musicians to come. As with any true live recording (sides 1- 5), the album oozes atmosphere and ‘stage’. Completely different is Klaus Nomi’s eponymous album where the man with the extreme soprano reach combined opera, rock, pop and even heavy metal in a unique delicate manner.

Many since tried to copy his daring though canny approach—think Nina Hagen—but even 30 years after his passing Nomi remains unparalleled. Another great musician no longer amongst us is Ali Farka Touré who on Ali & Toumani is joined by fellow Malian musician Toumani Diabaté on kora. This album is African Blues at its very best. Robert Wyatt’s Nothing can Stop Us meanwhile is a compilation of singles released in the roaring ‘80s. It's not the greatest Wyatt outing but a great sketch of the Thatcher/Reagan era.