Beag PKC-901 master bus noise improvements?

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abbey road d enfer

Well-known member
Staff member
GDIY Supporter
Jan 22, 2008
12AX7 said:
I think I have some Lundahl 1:1s but I'm not sure if they would fit in there. I'll have to check though.

So now I have four options for the output stage:
1) Keep the original as it is and see how well it performs after the rest of the summing bus modifications
2) Use the impedance balanced circuit (very easy mod and a pretty cool idea)
3) Use a 1:1 transformer (easy mod but would have to find two that fit on the module)
4) Use a THAT 1646 based output stage (not the easiest but should be doable)
Considering economics and performance vs. cost, I would readily opt for the 2nd option.

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