hiss reduction plugin

[JonnyMac]

Maybe the JackAMP plug-in.

Otherwise, I have included a couple White Noise Correction (hiss reduction) equalizer presets in the attachment. Unzip the file. They are EQF (individual EQ preset) files, to use them in Winamp...

Presets button > Load > Load from EQF > go to the directory you unzipped them to > select & load

EQ presets are very subjective actual results will vary with the listener's ear and the audio system on the their computer.