Mapletree Audio Design

Phono 5 Preamp Kit Assembly

Assembled by Steve Geiger

This a pictorial of my assembly of the M.A.D. phono stage preamplifier kit. It has a remote power supply with rectified DC on the heaters for low noise. The tubes used are 2-12SC7, 2-12FS5GT and 2-12SN7GT all N.O.S.

power supply parts ps filament transformer power supply chassis parts ps chassis parts 2 power supply hardware mounted power supply complete back
ps hardware mounted power supply complete front ps parts transformer and rectifier assy hardware mounted top
filter circuit hardware mounted bottom power wiring circuit circuit 2 with RIAA circuit
top label completed bottom complete both operating units setup