Not bad for the size (with my very limited knowledge of this field) !

In a couple tests, the "Male 2" voice sounds reasonable, but I've found it has problem with some groups of words, specially when played with little context. I think it's small sentences.

For example, if you try to do just "Hey gang!", it will sound something like "Chay yang". But if you add an additional sentence after that, it will sound a bit different (but still weird).