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> hi. for purely hobbyist reasons, i am wanting to hook some real > microphones to my thinkpad 760 and do some live digial recording, > ideally in stereo. > > i'm a bit puzzled by the input connector on the TP760 -- it seems > to take an 1/8" stereo plug, but it also has a sheath around the > outside that makes it able to accept -- at least physically -- > a male RCA plug. the meager documentation describes this as a > combination micropohone and line-in jack. I'm sure this is a stereo 1/8" phone jack, not an RCA connector. Inputs are most likely bridging (about 10k impedeance) and probably fairly sensitive as it accomodates microphone levels which are quite low. That is, you may need to pad the outputs of a mixer if that's how you plan to record (external mixer). Maximum input level is probably around -10dBv (where 0dB = 0.7745 volts). Most profesional sound gear have +4dB outputs thus 15dB pads would be a good idea - these are a somewhat common item and not hard to find. More padding may be needed depending on the crest factor of what you're recording (ratio of peak to rms or average levels) - for example very percussive music has high creat factor waveforms in it. And this assumes when you switch to line level inputs -10dB is not too much for the front end in the Thinkpad. Billy Y..