I practice a lot but i never know what to practice. If you know what to practice its ok. I think even if you dont really know what to practice you will still improve. You might not be able to write amazing songs and understand theory better but you should start to be able to improvise and start using more techniques by finding them out by messing around.
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.
