I think there is some confusion with the new vs old amps. Visually it seems like the new amps have yellow la figaro writing/logos while the old one has silver. Internally the new one has the upgraded resistor array and some other new components. As mentioned in this thread previously, the new amp should be able to run the 6C5 but the "new" la figaro amp that I have seems to be wired conventionally even though it looks like the new version on the outside and internally (with the new resistor array). I did purchase the "new" version from an ebay store, but it didn't sound like these guys modified the old conventionally wired version and then just re-sold. They simply seemed like resellers. When I purchased my EF86 adapters from yuking/la figaro they requested a picture of the internals of my amp. I think they wanted to make sure it was the "new" version, and once they saw it, sent me the EF86 adapters.
At one point I tried to clarify (in Chinese) what tubes could be used with both new and old versions of the amp but I never received a response from la figaro.
Maybe there are two different "new" versions of the amp in the wild.
That would not surprise me in the least, history repeats itself. I'm very happy with the product quality, couldn't be better imo and superior to some so-called 'western' amps going at 4 times the price (own a 337) but they should get their act together on versioning and modifications. even if most customers won't be bothered with the internals.