It has worked before. I have had to stay away from the hobby for family reasons, long story. I have listened sparingly and have heard the noise only in the past few months. Because of the erratic access I haven't paid much attention. I had a local guy look at a lean problem and he found some bad solder joints. I will contact him.
Hiss noise from my SFL2 preamp
I have had a hiss level from my Sonic Frontiers SFL2 for a bit. It is constant, loud enough to hear across the room and does not change in volume with the volume pot. It goes away if I mute the preamp. I have all new tubes, changed them around and no help. Balanced or single ended mode both. The phase switch when engaged is much noisier and more grunge sounding. Any ideas?