Originally posted by Pilot:
I don't know if the SD1 is like Yamaha PSRs but I think the intention of Yamaha was that you should use a step up transformer with a dynamic mic. The input impedance is high and there isn't enough gain in the amplifier for a low impedance mic so you'll get a lot of hiss if the gain control is turned up. So it might be worth getting a cheap transformer and trying that before you spring for a mic preamp.
Sd1 has a balanced mic input , no 1/4 inch !
I really think the solution is what I have suggested . Turn the output levels down to around 48 vs. 63 .
Dreamer , have you tried this ? dano
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