Hey there gang;
the vienna, right... well, where do I start!
The A51s was cool but I know it could be better. So I improved sensitivity, which improved the S/N ratio. I specified a brass edge-connected capsule (Austrian style; hence "Vienna") and improved the signal path. Higher sensitivity means lower headroom... so the pad went from 10 to 18 dBs.
The Hamburg... Basically the same mod but a 1" center electrode capsule (german style; hence "Hamburg") and a different internal EQ.
They compliment each other very well. Basically "Vienna" is bright , "Hamburg" is darker but has a more upfront midrange.
they're very quiet for acoustic sources (pad off) and can also take high SPLs (pad in) for amps & drums.
They're both transformer balanced.
The TL series have TransformerLess outputs (TL, get it?) and no "built in" EQ. Very different capsule, edge connected.
There will be revisions of the Vienna and Hamburg and LOTS more EXCITING stuff coming out next year. But we'l make the V and H as good as we possibly can. Next revision will be sometime next year; definitely components. Will there be an audible difference... I doubt it.
Next mic to receive my mod is the A51ST, and If we get enough requests, I'll change the fig-8 to super-cardioid. I think it will make the ST a lot more versatile. Maybe we'll have an ST"s" and an ST"h".
JP