What is the signal output level on my PCs sound card?
The output signal typically ranges up to 2 Volts RMS. Output impedance ranges from 10 ohms to a few hundred ohms (30-400 ohms is typical). This allows the output to be connected to consumer electronic equipment with line level inputs (normal HiFi amplifier with -10dB nominal level line input) or powered computer speakers. [8] It is wired on a stereo 3.5 mm jack as follows: Connection Description Tip Left audio channel Ring Right audio channel Sleeve Ground (cable shield) Sometimes you might find RCA jacks instead, where they will be labelled left and right (or just white and red respectively).
