• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
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    the safety precautions around high voltages.

MingDa MC-3R / icon audio la3 preamp mods

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Hi I have been making a few modifications to my preamp, which so far sound great.
I started with re-cabling a one pair of the inputs directly to the volume control, bypassing the selector.
Then have removed the dc blocking caps to a pair of the output rca.
I have also used some mundorf .033uf caps in parallel with the existing .33uf input caps.

I currently have replaced the signal valves with some second hand mullards, and am considering changing the Rectifier.

Does anyone have any other ideas/experience for modifications to the preamp for maximise its performance?

Any ideas or pointers greatly appreciated,
 

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