-Chassis machined from solid copper block -Size 160*160*40mm, weight 10kg -1 DC input, 6 DC outputs, 2 unfiltered (pass through), 2 default filters, 2 (differing) alternative filters -DC connectors: 2.5mm inner diameter, 5.5mm outer diameter, 11.3mm length (same as the switch and router) -Maximum current capacity 10A, maximum input voltage 25V, voltage in = voltage out, so this would typically be used with a 12V LPS to power multiple 12V devices.
This is a very recent discovery / development as we were working on addressing noise issues associated with wifi access points. Although DC power supply filtering is something we obviously have years of experience with, zooming in on specific aspects of noise, and the way they affect sound quality took an interesting turn with investigating noise generated by devices which are not designed with sound quality in mind. For example the discovery that the degradation caused by wifi noise is in fact not dominated by the airborne / radio function but by it’s interaction with the supply it is powered with and how that in turn affects and the mains supply, which powers our entire systems, gave us a different perspective to investigate.
We started analyzing these noise spectra and started designing filters to specifically target this type of noise, only to discover that this is a limited solution, as the supply powering the device is a big part of the equation, to make matters worse, different designs interact differently, with rather dramatic differing effects on sound quality as a result, keep in mind this even applies to a wifi access point which is only connected to the mains, as the connection on the output side of the device is airborne…
While testing a variety of power supply designs and various filters on wifi access points we started including the switch and router which sound quality performance, both being extremely low noise designs, are vastly dominated by the noise generated by the supplies powering them. The switch and router in fact perform better being powered by a single supply in stead of dual power supplies, simply because a 2nd power supply, even a very low noise linear supply, produces more (interacted) noise then the switch and router combined, additionally, when you connect the switch and router with the lowest noise producing option, being a DAC cable, there’s a direct/common ground between the 2 devices, which is unfavourable if being “modulated” by 2 different power supplies, simply put, one shared ground is better from a noise perspective, taking into account the very low current draw of both devices. Still the switch drawing 100mA is an unavoidably lower noise device then the router which draws 500mA and which performs more processing. Hence there’s a benefit “isolating” these 2 devices from each other while maintaining a common “ground” and reducing total setup noise by using one power supply.
On to the filters. Each of these provide over 80dB of additional noise filtering. Something I wish to add is that each of its 64 parts has been selected by ear, some are exotic and costly, like Duelund capacitors, and each of these have an effect at this level, just a small anecdote of what is involved and how much actual listening went into designing these. We have 2 default filters which we consider to be neutral sounding, they don’t change the sound, they just (significantly) improve upon what’s there. The extend to which they do that even caught me by surprise, it’s far from subtle, perhaps as much as a 20% improvement on the whole package. However, there’s more to this story, when I write they don’t change the sound from neutral, that is in fact not true, that is referenced to a battery supply I consider to be neutral, the story changes when using different power supplies and when mains “quality” differs. For that reason we included 2 alternative filters allowing you to tune the sound towards getting a neutral balance with varying power supplies and mains conditions. Alternatively you can divert from neutral to taste. These alternative filters allow you to “tune the sound” towards a darker, fuller, more expansive sound, or to a brighter more incisive, and therefor a subjectively more detailed sound.
The unique M-Array configuration features a single MPD III Transducer surrounded by six RDT III dedicated midrange drivers
3rd generation MPD III high-frequency transducers reduce distortion, flatten frequency response and lead to wider, cleaner more consistent and lifelike sound
RDT III cone produces piston-like control even under the most extreme performance, providing a more precise, lifelike tonal balance and lower distortion
Newly optimised Mid-range drivers ensure a completely smooth frequency transition with Tweeter
Carefully engineered crossovers produced to ensure the most exact and controlled sound performance across full frequency spectrum
Hyphn is available in three incredible finishes: Matte Black, Matte Heritage Green and Pure Satin White
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STATE OF MINNESOTA
DISTRICT COURTCOUNTY OF HENNEPINFOURTII JUDICIAL DISTRICTCase Type:Other CivilIn re:Court File No.27-CV-23-4399Assignment for the Benefit of Creditors ofAudio Research CorporationNOTICE OF ASSIGNMENTFOR BENEFIT OF CREDTTORSNOTICE OF ASSIGMENT FOR BENEFIT OF CREDITORS:To all known creditors und other parties in interest of Assignor, Audio ResearchCorporation (“Assignor”), give at Assignor’s last known address for each creditor.NOTICE IS HEREBY GIVEN THAT: a certain Assignment for Benefit of Creditors,datedApril 4,2023 (the “Assignment”) was executed by and between Assignor and LighthouseManagement Group, Inc. (the “Assignee”). The Assignment was filed by the Assignor with theHennepin County District Court for the Stute of Minnesotn on April 4, 2023, at 12:42 p.m. in CourtFile No. 27-CV-23-4399. The names and addresses of the Assignor, the Assignce,and theAssignce’s attomcy are as follows:ASSIGNORCOUNSEL FOR ASSIGNORAudio Research CorporationNONE6550 Wedgwood Road N.,Suite 115Maple Grove,MN 55311ASSIGNEECOUNSEL FOR ASSIGNEELighthouse Management Group,Inc.Ravich Meyer Kirkman McGiruth Nauman &Tansey,P.AAttn:Patrick Finn150 South Fifth Street,Suite 3450900 Long Lake Road,Suite 180Minneapolis,MN 55304New Brighton,MN 55112Phone:(612)332-8511Phone: (651)323-2261(00603490)