Corelli Corundum Power Enhancer By Akiko Audio
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Product Summary:
The Akiko Audio Corelli Power Conditioner is Akiko’s flagship product and it’s a winner! As with all Akiko products the Corelli eliminates distortion and ground noise, without dragging down the dynamics and treble extension…however, this product is substantially more powerful and capable than anything we’ve offered from Akiko thus far.
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Price:
Corelli Corundum Power Enhancer By Akiko Audio
$2,495
The Akiko Audio Corelli Power Conditioner is Akiko’s flagship product and it’s a winner! As with all Akiko products the Corelli eliminates distortion and ground noise, without dragging down the dynamics and treble extension…however, this product is substantially more powerful and capable than anything we’ve offered from Akiko thus far.
..... Click To Read MoreProduct Description
The Akiko Audio Corelli Power Conditioner is a top-tier high-end solution designed to provide exceptionally clean and quiet power without sacrificing dynamics or treble extension. It is considered one of the most powerful and refined units in Akiko Audio’s lineup.
Unlike traditional power conditioners, the Corelli achieves noise and distortion reduction without active electronics or conventional filtering components, preserving the natural energy and flow of your music.
Internally, the Corelli uses three woven-carbon chambers, each dedicated to a separate signal path—neutral, phase, and ground—while a fourth chamber harmonizes the internal high-frequency field. The entire unit is stabilized with black resin to control unwanted microphonic effects and further improve performance.
The outcome is noticeably cleaner power that translates into a more open, natural, and dynamic sound. By reducing high-frequency noise, the Corelli enhances clarity and detail, offering a lifelike and transparent musical experience that brings recordings vividly to life.
What to expect.
- A very honest and neutral rendering.
- Improved timing.
- Music is experienced as more natural and cleaner.
- Remarkable improvement of voice rendering and the rendering of acoustic instruments.
- By lowering the high-frequency noise, listening fatigue is dramatically reduced.
- Overtones and small details become more audible because of the lower noise floor, making instruments more recognizable.
- A lower noise floor will submerge deeper into the recording; small details become audible, leading to more emotion while enjoying your music.
Power Cable Option: The Akiko HQ Flex Gold power cable is an optional upgrade that offers a noticeable boost in performance for a relatively small additional investment. It’s the same cable used by Akiko Audio during the development of the Corelli, making it the ideal choice for seamless synergy and optimal results with the power conditioner.
Note: This unit is not a power distributor (it does not have outlets). It simply plugs into one receptacle of your mains outlet, with the rest of the system.
Reviews
From the new 6Moons Review:
https://6moons.com/audioreview_articles/akiko-audio-corelli-corundum
“The Dutch addition can make a very noticeable improvement even in a remote location far away from any big city and commercial industry.”
“Rather than extra body, dynamics and weight, its action is focused on clarity, noise floor, speed and related energy transmission. Consider me sold. The review sample is staying!”
From the Positive Feedback review:
https://positive-feedback.com/reviews/hardware-reviews/akiko-audio-corelli-power-conditioner/
“the Corelli cleans up the power fed to your audio components without using any electrical components or active power filtering in the direct path of the power. The huge advantage of taking this route is that the power is filtered without limiting the current that flows to your components, so the dynamics of the music are not adversely affected in any way.”
“Akiko Audio products are hand made in Holland, and the build quality is impeccable. The Corelli was no exception.”
“The Corelli claim to fame is that it reduces high frequency noise in the power supply, thus allowing your audio components to reproduce music with improved timing, better voice and acoustic instrument rendition, lower noise floor, and less listening fatigue.”
“What became very apparent was the drop in the noise floor, which allowed me to hear subtleties, and nuances, that I had not noticed before. For music tracks, which gradually fade into silence when they end, as the volume diminishes, details tend to disappear. With the Corelli, a lot more of those details were audible right up to the time the music gives way to total silence.”
“What also surprised me is the impact that the Corelli has on the bass. Not only is the bass cleaner and more tuneful now, it is also a lot more impactful. I can now feel the bass on my chest, and in my bones, at much lower volume levels than before. I cannot scientifically explain why a component that reduces high frequency noise in the power supply can influence the bass reproduction like this, but I cannot deny what I can hear and feel so distinctly.”
“I found myself unconsciously bobbing my head and tapping my feet to tracks that before did not compel me to do so sub consciously. The only way to interpret that is to assume that the Corelli has made a positive difference to the way my system delivers pace, rhythm, and timing.”
“it allows my system to deliver music with a lot less effort, and a lot more ease. The music has a more relaxed and effortless feel to it, which in turn reduces the fatigue factor quite a bit.”
“I guess if you add up all the differences that the Corelli makes to my audio system, the end result is that I am able to connect emotionally to the artist a lot better than before.”
“the compression and distortion at musical peaks is significantly less while retention of subtle details during the quieter passages is enhanced.”
“given that the Corelli struts its stuff without impacting the current flow in the power supply to your components, and the fact that it is so reasonably priced, compels me to urge every audiophile to give it a try.”
From the 6Moons review:
http://6moons.com/audioreviews2/akiko2/1.html
“Contrary to previous Akiko products, the Corelli is first to address the positive, return and ground legs of the AC. Its fourth filter then absorbs all the high-frequency radiation inside the Corelli. To control resonances, some parts of it are cast in black resin. It took Akiko over two years to develop this product. A lot of time was spent researching and identifying new more effective piezoelectic materials.”
“Mind you, noise is not always volume dependent. If the noise is in the signal, it’s become an environmental constant. It may not be audible as noise but it still affects what we hear (and even how we feel). As we’ve laid out earlier, ultrasonic pollution reaches us through many channels.”
“The difference was immediate, irrefutable and merciless. Before the introduction of the Dutch black box, the sound already had been open, dynamic and detailed with a very nice soundstage illusion that was deep and wide. The Akiko Corelli maintained this notion but now with a vengeance.”
“What happened to the sound even at very low volume was that we felt inducted into a previously shrouded secret musical dimension. You may think this over the top since a few handfuls of crystals jammed into three carbon-fiber tubes couldn’t possibly do this. Right? We thought so too; until we unplugged the Corelli again. Instantly the sound lost its extra-dimensional communion and returned to being just very good. We could live with this sound for years and be very content and proud of it. However, we now had experienced the substance, the instantly addictive potion that not only worked on our ears but also on our full-body perception. Once the Corelli was plugged back in, there was no short temporary rush but the sustained bliss which only untainted music can bring.”
Specifications
- Width: 215mm (8in)
- Length: 311mm (12in)
- Height: 112mm (5in)
- Weight: 6.3 kg (14lbs)
- The Corelli doesn’t contain any electrical components or active power filtering and doesn’t come with an on-off switch, display, or led lighting, to prevent extra contact resistance and unnecessary power pollution.
- The 8mm thick aluminum front panel is energetically treated.
- Ground unit enriched with minerals from the corundum group.
- The Akiko Audio Power conditioner Corelli is Hand Made. All soldering is done with a WBT-0800 Silver Solder.
- Suitable for 90 to 250 Volt, 50-60 Hz.
- Furutech IEC inlet with fuse holder.
- Comes with an Audio Grade gold-plated ceramic fuse, with Tuning Chip.
- Includes a 10-year warranty.
Know more details about products
Product Description
Lehmann Black Cube SE II – Precision Phono Stage for True Audiophiles
The Black Cube SE II builds on the acclaimed SE circuit, upgraded with superior sockets and an adjustable bass filter, allowing you to fine-tune your system to your personal listening preferences. Designed for maximum musical engagement, it delivers the sensation that your favorite recordings were crafted just for you, bringing instruments and vocals closer than ever.
Tailored for Every System
Compatible with nearly all MM and MC cartridges, the Black Cube SE II includes solder-free slots for custom impedance adjustments, plus an extra hardwired plug-in location for immediate flexibility. Optional matching resistors can be provided with your order at no extra cost, making it easy to optimize the phono stage for your system.
Audiophile-Grade Audio Circuitry
At its core, a high-precision passive RIAA filter network sits between two linear gain stages, built with surge-proof, narrow-tolerance polypropylene capacitors. This design preserves transients, dynamics, and timbres with exceptional clarity. Professional-grade input stages reduce noise while enhancing precision and power. Additional modules handle hum, high-frequency interference, and random voltage suppression, and the double-sided audio board ensures a low-interference signal path.
Dependable PWX Power Supply
The external PWX power supply features a custom toroidal transformer with static shielding, providing stable, safe, and powerful operation. Gold-plated Neutrik XLR connectors maintain secure connections, while shielded cables and mechanically damped aluminum housings minimize vibrations and interference.
Elegant Design
With a choice of silver, black, or chrome-plated front panels, the Black Cube SE II combines audiophile-grade performance with a refined aesthetic that looks as good in your HiFi rack as it sounds in your system.
Professional Endorsement
Known for its neutral, natural sound, Lehmann equipment is trusted by professional recording studios and music experts worldwide. The Black Cube SE II offers a high-fidelity listening experience that reveals every nuance in your favorite recordings.
Note: The sonic profile of Lehmann gear is perhaps the most neutral we can find. This brand is quite popular with our professional music/recording studio clients.
Reviews
AUDIO
“Upgraded to the SE version by the PWX, it was definitely poking the fire again like almost no other phono pre in its price range. Merciless heavy rock by Vanilla Fudge or massive bigband attacks by Count Basie were just about to blaze through the listening room. Pimped in such a hot manner, the Lehmann Black Cube SE II is state-of-the-art.”
https://jaguaraudio.com/wp-content/uploads/2021/06/EN-2020_01-AUDIO-Black_Cube_II.pdf
Hifi News
“This is a true audiophile phono stage and, partnered with equipment of equal quality, the results are remarkable. Indeed, the SE II is difficult to fault even compared to the competition in a much higher price bracket. The exceptionally low background noise allied to a fabulous rhythmic and tonal rendition makes it worthy of consideration for those seeking the most detail from their vinyl without having to make a hyperspace price jump.”
https://jaguaraudio.com/wp-content/uploads/2021/06/EN_review_Hifi_News_02_2010_SEII_screen.pdf
Hifi News
“To ?nd more depth and detail in music I know so well was a remarkable experience and I warmed to this little gem of a phono stage all over again.”
Specifications
The impressing technical details of the Black Cube SE II.
Sensitivity for output level 775 mV/ 0 dB (with activated high gain switch): MM: 3.8 mV/1 kHz; MC: 0.38 mV/1 kHz
Gain 1 kHz: MM: 46 dB; MC: 66 dB
Maximum input level 1 kHz: MM: 45 mV; MC: 4,5 mV
Signal to noise ratio (RMS unweighted): MM: 71 dB; MC: 63 dB
Gain: 36 dB, 46 dB, 56 dB, 66 dB
Channel separation: > 80 dB at 10 kHz
Input impedance: 47 kohms, 1 kohm, 100 ohms, 1 x custom load, 1 x hardwire slot
Output impedance: 47 ohms
Input capacitance: 100 pF
Channel mismatch: typ. 0.5 dB
Bass filter: 16 settings between 7 Hz and app. 90 Hz
Power consumption: < 3 W
Outer dimensions W x D x H:
Audio section: 114 mm x 124 mm 50 mm
PWX power supply: 93 mm x 233 mm x 45 mm
Weight:
Audio section: 0.6 kg netto
PWX power supply: 1.0 kg netto




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