They are part of the Stasis group that Nelson designed, all are pretty similar save for the power supply grows and the output transistors increase as you go up the ladder. from the 150 up to yours, here is the circuit that applies to all of them, except for the additions as you go up in models. As for the 4.5euro offer, that seems good to me as that’s $10k Australian, get him to organise shipping, then it’s on his head. I think you would find better amps today that use BJT outputs like this does, as they are my choice of output device as well.
Hi, I was curious about these amps. May I ask?:
What is the input sensitivity for full power output with these amps?
I've read on the back of Threshold amps that they should only be used with loads over 4 Ohms. Is that the same with these? If not, what is the power output into 2 Ohms with these amps?
Are they now true balanced amps of just have XLR inputs?