A Tube based Phono Preamplifier

Since noise is always a very important factor in phono preamp designs, Marcel gives it much attention. He compares several tubes in this regards, giving methods for reliably measuring the noise performance of the selected devices including using modern PC-based waveform analysis applications like GoldWave. The final design is put through its paces showing good RIAA conformity, low noise and distortion and is audibly pleasing to listen to.