Κώστας Φ.
Truth hurts. Here's a teddy bear.
- Μηνύματα
- 8.978
- Reaction score
- 895
"The Acoustic Revive RR-77 ultra-low frequency pulse generator is a stand-alone active device that plugs into a wall outlet but not your HiFi rig. According to Acoustic Revive, the RR-77 generates a 7.83Hz Schumann frequency pulse that 'shields' your HiFi electronics and listening room from radio frequency interference and thereby improves the S/N ratio so the electronics perform better.
Let me give you additional background because there's quite a lot more to the RR-77 than that. Let's start with the Schumann resonance frequency phenomena. The Schumann resonance is a natural geophysical resonant frequency mode of the Earth that occurs at approximately 7.83Hz and in 1952 was predicted mathematically by physicist Winfried Otto Schumann for whom it was named.
Here's how it works:
When solar radiation strikes the Earth's outer atmosphere, molecules like NO, N2 and O2 are ionized to produce a positively charged layer called the ionosphere. The surface of the Earth has a negative charge of electricity due to transfer of electrical energy from the atmosphere. The portion of the atmosphere between the positively charge ionosphere and the negatively charged Earth surface acts as a natural capacitor where charges build up and then discharge in the form of electrical storms. These electrical storms produce electromagnetic waves in the very low frequency and extremely low frequency ranges. These naturally produced electromagnetic waves are attenuated by the ionosphere and the Earth's charged surface which functions as a waveguide. These attenuated electromagnetic waves travel around the world in the atmosphere as standing waves at the frequency of 7.83Hz and its harmonics. For a nice technical description of all the intricacies of the Schumann resonance, I suggest visiting the University of Iowa website.
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As hifi enthusiasts know, there is a lot of electromagnetic 'pollution' from signal transmissions in modern times that can degrade a system's performance. It would appear that Schumann pulse generators like the Acoustic Revive RR-77 provide a shield for EM pollution. It stands to reason that if a Schumann pulse generator can shield a human body from harmful EM contamination and provide positive benefits, it might do the same thing for our HiFi rigs - which is exactly the premise behind the Acoustic Revive RR-77.
The Acoustic Revive catalog says the R-77 ultra-low frequency pulse generator has: "Wonderful effects of improving sound and picture quality!... RR-77 is used in the recording and mastering studios of major record companies." The Acoustic Revive RR-77 Schumann pulse generator is about the size of an outboard hard drive for a computer and plugs into a wall outlet. The RR-77 is nicely made and its light weight is due to a plastic chassis containing a single circuit board. The chassis is finished in an attractive silver paint job with contrasting gold lettering. There is a power switch on the back and a blue LED illuminates to indicate when the RR-77 is powered up.
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Conclusion
The RR-77 pulls off a real magic act in accentuating the musicality of a recording and hifi rig. The non-musical elements of the recording process such as soundspace, soundstaging, imaging, extreme detail recovery and so forth all have a dollop of naturalness applied to them so that they don't distract you from the musical elements of tone, melody, rhythm, emotional impact and musical flow. Those non-musical artifacts are still there but now in complete support of the music to never draw your attention away from the music as some audiophile-style systems tend to do.
With the RR-77 doing its little magic act, I can listen all day long with zero listening fatigue. If anything, a listening session becomes energizing and edifying and when a long nocturnal session is over, I feel refreshed. Did I mention that audio pals Pete Riggle and Stephæn Harrell both bought one of these devices after giving it a listen? They did. And you just know that mine's not going anywhere.
The RR-77 is a no-brainer purchase. At $425, it is expensive for what it seems to be - a little plastic box with a circuit board inside. It is a musical bargain though at that price -- or any price really -- for what it does to transform the listening experience. The RR-77 is a music lover's Blue Moon winner if I've ever seen one: absolutely, unequivocally and enthusiastically recommended."
Full Review: 6moons.com
