Still out there .........?
Yes, Communistar shut up shop in the mi-1990's
There are 3 or 4 points you could tap audio from - but which one is best suited is going to be determined by which input you choose to drive the PA through, so, how are you intending to drive the PA?
- through a line input balanced or unbalanced (anyhow, line level should be around 4dB/1.5v)?
- or, through a mic input (and would that be a 600Ohm mic input, or some other impedance)?