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.
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My friend has found a laney 100watt amp. It has two speakers each giving out 50watts. They will sell it to him for £100. I dont know what model it is but from what i've said does anyone think thats a good deal ?