I've had my Spider IV 75 watt amp for 2 years now, I love the tones no matter what my friends say, but a problem has just arisen. Last night my amp was working just fine, but then I turned it on this morning and the sound output is not as loud as it used to be now. The amp used to be able to get really loud, but now it doesn't get loud enough. I turn the volume onto the highest it can go and it still sounds like it's only in the 10o'clock position. I really need help with this, I have to play a show with this amp tomorrow and we'll have to cancel if I don't solve this problem. Many thanks!