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Hi
Yes the Lundahl transformers are very high quality and selecting one with a variety of ratios available would allow some experimentation. It may be that you can't use a 1:5 ratio because the impedance of your existing mic amp input is too low. Lundahl's website has some useful info about their transformers. Whatever you do with it you won't damage anything so you can experiment.
Regarding the fader and amplifier, I was meaning a fader followed by an amplifier, with a modest gain, say 6 - 10dB. This would 'buffer' the medium impedance of the fader, so it would then be able to 'drive' some cable and also give you some gain. The amplifier could be transistor, IC or valve, it is up to you. If you are not really into electronics too seriously I would suggest a little amplifier kit from Velleman. I think theirs uses a TLO71 but once you have it working you could swap it for something a little better, NE5534 (with an extra capacitor from pin 5-8) to stabilise it.
If I did not spend so much time on Gerarslutz then Sysonstein would be completed by now!!
Matt S
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