Digidesign MS315 BF Tech 21 Sans Amp The SansAmp PSA-1 is a tube amp simulator plug-in that provides a wide range of amplifier, harmonic generation, cabinet simulation and equalization tone shaping options. Although originally designed for processing guitar tracks, the plug-in has found its way on everything from drums and bass to vocals and harmonica. For recording guitar tracks, the SansAmp PSA-1 allows one to capture a source free of muddy sound degradation or excess noise and then dial up any tone imaginable. Perfect for those musicians who cannot record a guitar cabinet at full throttle due to noise restrictions. Features: Virtual recreation of the Tech 21 Sans Amp PSA hardware rack Add warmth and punch to existing tracks Full automation of all parameters