By virtue of their electrical properties, tubes generate a special waveform when they're saturated, which is why tube engineering has tremendous tonal advantages over solid state or DSP solutions, particularly for crunch and lead sounds. Tubes enter the saturation zone gradually or softly, which lends tube-driven tone its trademark yet totally unique character.
View post (Best concert uve ever seen???)
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It wasnt really a concert but i saw michael angelo live last sunday and was sitting about 1 meter from the front. He played twice that day and i was sitting at the front the second time as well :). It sounded so amazing !