Nelson Pass Aleph P
My brother and I have build two Nelson Pass Aleph P Class A preamplifiers, and we are very pleased with the sound. The preamp is controlled by a PIC18F4620 micro controller.
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PIC control board PCB. We have changed the PIC to a new bigger model PIC18F4620 to implement new functionality. Note! This is version 30 with the old jog wheel.
The electronic files