Country of Origin
Reviewer: Srajan Ebaen
Financial interests: click here
Main system: Sources: Retina 5K 27" iMac (i5, 256GB SSD, 40GB RAM, Sonoma 14), 4TB external SSD with Thunderbolt 3, Audirvana Studio, Qobuz Sublime, Singxer SU-6 USB bridge, LHY Audio SW-8 & SW-6 switch, Sonnet Pasithea, COS Engineering D1, Laiv Audio Harmony; Active filter: Lifesaver Audio Gradient Box 2; Power amplifiers: Kinki Studio EX-B7 monos & Gold Note monos on subwoofer; Headamp: Enleum AMP-23R; Phones: Raal 1995 Immanis; Loudspeakers: Qualio IQ [on loan] Cables: Exact Express Flame, Furutech; Power delivery: 2 x Kinki/Vinshine Tai Hang on amps and source stack, Furutech DPS-4.1 between wall and conditioners; Equipment rack: Artesanía Audio Exoteryc double-wide 3-tier with optional glass shelves, Exoteryc amp stands; Sundry accessories: Acoustic System resonators, AudioQuest FogLifters; Room: 6 x 8m with open door behind listening seat; Room treatment: 2 x PSI Audio AVAA C214 active bass traps
2nd system: Source: FiiO R7 into Soundaware D300Ref SD transport to Cen.Grand DSDAC 1.0 Deluxe with POW; Preamp/filter: Lifesaver Audio Gradient Box 2; Amplifier: Kinki Studio EX-M7; Loudspeakers: ModalAkustik MusikBoxx + Dynaudio S18 sub; Cable loom: Exact Express Earth; Power delivery: Vibex Granada/Alhambra, Akiko Audio Corelli Corundum & Castello Solo; Equipment rack: Hifistay Mythology Transform X-Frame [on extended loan]; Sundry accessories: Furutech cable lifts, Furutech NFC Clear Lines; Room: ~3.5 x 8m
2nd headfi system: DAC: Cen.Grand DSDAC 1.0 Deluxe with POW; Headamp: Cen.Grand Silver Fox; Headphones: Raal 1995 Magna, HifiMan Susvara
Desktop system: Source: HP Z2 work station Win11/64; USB bridge: Singxer SU-2; DAC/headamp: iFi iDSD Pro Signature; Amplifiers: Topping B200; Speakers: Virtual Hifi Viper; Headphones: Final D-8000, aune SR7000
Upstairs headfi system: FiiO R7; Headphones: Meze 109 Pro, Fiio FT3
2-channel video system: Source: Oppo BDP-105; All-in-One: Gold Note IS-1000 Deluxe; Loudspeakers: Zu Soul VI; Subwoofer: Zu Submission; Power delivery: Furutech eTP-8, Room: ~6x4m
Review component retail: set of 4 CHF218 incl. 8.1% VAT
Terminally tighten up yer nuts. Just don't overtighten. Before you dread pants too tight for cycling, enter Sven Boenicke's Terminal Tightening Nuts, henceforth TTN. They replace the injection-moulded plastic caps of WBT 07-series binding posts. As the product page phrases it, Sven's CNC'd Cherry wood has been "informed" by Green Harmonia. It's an energetic process from what reads like a New Age purveyor. Our hifi sector knows exposure to heat, cold, extreme voltages or broad-spectrum frequency sweeps and beat patterns with break-in CDs and cable cookers. As translated from the website, the Harmonie Transfer exploits higher-order resonance activated by photons then uses the carrier potential of different materials. The energetic imprint is impervious to freezing, heating, magnetic or electrical fields. The inventor Aron Bernhard Heinrich whose day job is as accredited electronic engineer in Munich's airport stresses that his treatment is unlike molecular relaxation by cryogenics or information imprints by quantum mechanics. The underlying idea seems to be that material memory can be set to higher frequencies then stably resonate at them in perpetuity. I first came across a possibly similar notion with the Tachyonic products sold in Vevey's Le Papillon Bleu boutique in Switzerland's Canton of Vaud.
As its owner explained who'd been to the lab which tachyonised his products, carrier materials like metal pendants or glass-based objects are made to hold specific stellar frequencies. The lengthy imprinting process bakes its objects in a specialized oven during particular celestial alignments. It focuses and amplifies these energies whilst irradiating the objects within. It's the sort of thing which tainted the New Age as hocus pocus in the eyes of hard scientists. Sven Boenicke is no stranger to it. Already many of his internal speaker and electronics tweaks jump the tracks of engineering textbooks. His site thus merely lists them by name then skips explanations. His shoppers tend to compare his various tweak tiers at a local dealer to vote by ear. Ditto for Green Harmonia's treatment of today's TTN. It's mentioned in passing on the product page. Learning more means visiting the German site. If we don't, there's nothing esoteric, just a set of threaded wooden nuts to replace stock WBT plastic nuts of the same size. Swapping them on single-wire speakers takes a minute or two. Listen. Swap. Rinse and repeat. Heard nothing? Walk away. Heard something? Weigh the cost/benefit ratio. If benefits win over expense, part with coin. Enjoy. Leave the 'how' and 'why' to the oracle. Or, speculate until the Swiss cows come home with their massive bells. To make this experiment just needs speakers with WBT 07-type binding posts. When Sven solicited this review, he offered to dispatch a pair of his W5SE mini monitors should I lack suitable swap candidates. Yet I had three pairs: Qualio IQ; ModalAkustik MusikBoxx; Virtual Hifi Viper. Was I in trouble or what?
Being no stranger to Franck Tchang's acoustic resonators, Louis Motek's BlackBody and Firewall or Schnerzinger tech, I saw no trouble. I saw an op "to be amazed by the surprising effect this swap will exhibit. You can expect at least a 15-20% expansion of 3D soundstaging especially in image height!" Would my ears go nuts? Would I be called the Nutty Professor if I said so? Would I hear nothing? One way to find out. Sven's success with unorthodox tweaks is well established. So is the fact that all of his speakers are cavernous soundstagers. If he promised a significant improvement on said score which simply screws on without adding an unsightly pigtailed box, I was prepared to give him the benefit of the doubt. With no formal categorization other than accessory when my archives need more specific sorting criteria, I shall call the TTN a signal conditioner. Its MO involves proximity by either surrounding the signal (banana) or butting up against it (spade). Akiko's piezo-electrically active particle compounds and Furutech's Nano-Carbon Formula² do likewise. Caelin Gabriel of Shunyata filed a 2003 patent for related tech. Its influence exerts by close proximity.
Getting more granular is for the oracle. Sadly I lost her number. I do remember Sven's synthæsthesia. His hearing intersects with seeing colours. A Virginia hifi-shop owner had the same gift. He chased a golden hue whilst tuning his salesfloor and client systems. Whilst at Audio Group Denmark's premises, I learnt of a consultant who had treated their demo rooms. Since emerging from a post-accident coma, this man sees air turbulences. That's a very useful skill to have to optimize room acoustics. As auto didact, Sven is guided far more by his perception and experience—he does a lot of live recordings on his own equipment—than classic math and Physics. It shouldn't surprise that this leads him to solutions which textbook engineers wouldn't ever consider. Yet given his brand's commercial success and longevity, his approach clearly works. It's now led to very small parts to bolt on Boenicke trickery to his own and competing 
speakers. I thought that was intriguing. That it should bug Physics majors like a pest is a fringe benefit. If I thought otherwise, I would have named this site Hifi Lab Reports not 6moons¹.
¹ If we cast our net beyond audio, religions and spiritual traditions all acknowledge consecrated spaces. Be they for prayer, worship or meditation as churches, mosques or temples; as graves or dwellings of saints; objects like a Shiva lingam or cross – empowerment is believed to program in deliberate vibrations. Even if they call themselves diehard agnostics, tourists to a cathedral or mosque may still sense profound stillness perceived as holy presence regardless of beliefs. It's energetic memories of centuries' worth of contemplation and prayer. Intent, focus and ritual can imbue physical structures even ordinary objects with blessing powers. They may hold for ages especially where maintained by the sympathetic resonance of worshippers and custodians. It's an aspect of transmission. The historical yogi Shiva is said to have projected his entire consciousness into Mount Kailash [above] which Sadhguru today calls our planet's deepest spiritual library. It just takes extraordinary beings to access; there for all to see and the focus of endless pilgrimages but read by only the very few. Yet is any of it fundamentally different from 'informing' wooden nuts if one knows the correct ritual aka method?
Back on Boenicke, their speaker catalogue shows solid fondness for WBT NextGen binding posts. They appear on four models including these. So today's wooden nuts started as a residential upgrade. Proposing cross pollination with competing loudspeakers was a secondary if perfectly logical but also gutsy consideration given the Green Harmonia aspect. Cross pollination follows the adage, what's good for the goose is good for the gander. So let's have a gander and see whether this goose is cooked or struts with swagger and squawk.² At 218 Swiss including VAT for a set of four, getting these woodies on a single-wire speaker pair won't mean a major wallet raid.
² To point out the obvious, the terminal parameters usually considered important—the metallurgy and how the internal connection is soldered, crimped, screwed or cold-welded—remain unchanged. The change is about what's usually considered unimportant, the terminal nut riding on/around the inner banana sleeve. If the point of this exercise is maximal proximity exposure to the Green Harmonia treatment, a banana connection should see more than a spade.
