WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
Building, troubleshooting and testing of these amplifiers should only be
performed by someone who is thoroughly familiar with
the safety precautions around high voltages.
Yes, I used SpectraLab, WinMLS200 and EFT5. Concerning sound card, I used Audigy Platinum eX first and now Lynx L22 ...
Before 5.0 is had some minor bugs, but was still useful, at least for me.