Why should it be necessary to provide Hypex with whatever paperwork is required to satisfy an arbitrary "appropriate person" test, just to purchase an audio module?
To a professionally qualified and reasonably competent electrical engineer but without the commercial documentation to meet such a test, it is a form of unnecessary discrimination. Further, to suggest I could do the same is unreasonable, and I would be uncomfortable trying to deceive Hypex by submitting inaccurate paperwork. So no, I could not do the same as
@pma. That is as it may be, but there should be no need to have to go through the process of establishing an OEM account to facilitate the purchase of certain of nCore modules.
The NC 400 module is available to purchase on
https://www.diyclassd.com/, along with four modules from the UcD range. All are single channel and require additional power supply boards compared to the NC252 which is dual channel and has an on-board power supply. In the DIY domain, assembly of these modules has greater complexity, potentially requiring a greater degree of support, than assembling a NC252 module. If there is one Hypex module that should be part of the DIY range, it is the NC252.
It is reasonable to suggest that profit margin is the real motive, rather than protecting the market for electrical equiment manufacturers, with greater margins available on the multiple DIY modules required to assemble a two-channel amplifier.
The decision by Hypex to categorise modules as OEM restricts the availability of these modules to individual constructors, which in turn is to the perceived benefit of electrical equipment manufacturers. Modules can be purchased from competitors such as Purifi and ICEpower without such an unreasonable restriction, so why not Hypex?
