audioguru Well-Known Member Most Helpful Member Aug 29, 2012 #21 Any noise on the power supply voltage is amplified by the circuit. Without an input signal then the noise at the output should be very low. If there is noise then the opamps are bad or the wiring picks up interference.
Any noise on the power supply voltage is amplified by the circuit. Without an input signal then the noise at the output should be very low. If there is noise then the opamps are bad or the wiring picks up interference.