Wayne Parham Messages: 18786 Registered: January 2001
Illuminati (33rd Degree)
Pi Speakers are high-efficiency designs. Sometimes speakers like these will expose amplifier noise that isn't noticeable when using other speakers. This is more commonly expressed by tube amp owners than solid state, because some tube amps generate a little more low-level noise, usually power-supply hum. But some solid state amps do it too, and also some sources - regardless of amplification - and in those cases, it's usually hiss.