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More build with toroids.
GU50 mono blocks,no hum no hiss.
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You can never have enough Trainwreck Express clones amplifiers.
That's why I built another one. Now with a shield over the toroidal transformer.
I use a 5mm thick aluminium tube there.
Post PI Master volume and tube FX send/return.
The amplifier sounds quieter in terms of background noise than the previous one.
The small changes I made are the ground of the PI and Presence now goes to the HV EL34 ground and not the preamp ground.
Now I just have to build it into the wooden cabinet.
 

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