When I visited with Loricraft in England in December, I asked what the differences were between the two power supply units (PSU 301/Archivist and PSU401), given their vastly different price. The answer is too long to recount here (if anyone is really interested, feel free to give me a call or email) but the result was an offer by Loricraft to create for OMA a single new supply that has the performance of the more expensive unit, but at a much more reasonable price. Most people don't need the speed control that someone archiving 78rpm shellacs would want. This new unit will be useable by not only Garrard 301 and 401 owners, but Lenco and TD124 owners as well. That is the way it has been presented to me by Garrard's engineer who created the PSU line.
The new supply will be configured 110V or 220V in or out, but the settings are done at the factory, and not changeable by the user. This does mean, though, that you can buy a UK or Euro 301, keep it 220V and 50hz, but still use it in the US. And according to Garrard/Loricraft, that is the optimal configuration for performance.
Mike, as to your question whether your present unit could be changed, I do believe this is a possibility, as the beta tester for this new design was an earlier PSU which went back to Loricraft for conversion.
This is a fully new design. It is not an "upgrade" with some changes in boutique caps and such. Considering that the price goes down by several thousand dollars, but the performance is supposedly equivalent to the most expensive unit made by Loricraft, I would say this is a good thing.
I hope to have this online in the next couple of months. If I don't hear a big improvement in sound from the new supply, I won't carry it.