I am looking to switch from the headphone jack of my cd player to the line out after finding that the headphone amp clips peak white. can someone design a simple, adjustable amp to bring the signal up to 1V p-p? the output now is around 300mv p-p.
i also noticed that the output of my cd player drifts negative as it plays. for example, on an all white picture, the output starts out at 300mv but slowly drops to 100mv after 15 sec, before stabilizing at about 37mv after about 40 secs. the amplitude doesnt change, it just drifts more negative. is this caused by my oscilloscope, because the brightness is stable on my monitor.