On Mon, 14 Jul 2008 14:59:54 -0700 (PDT), simplesal
wrote:

I’m looking for away to amplify the audio signal coming from my
computer sound cards output.
I’m trying to amplify the output voltage to 31 volts and the output
current to 1.5mA can someone recommend a small amplifier to do the job
or a circuit that will do this for me.

I'm just trying to do some testing.

tia sal2

A small audio amp, maybe even the one in your computer's speakers,
with one speaker replaced by a "70 volt" audio transformer, connected
backwards, to serve as a step-up transformer.