Hello everyone. I'm having an amazingly strange problem with my Ampeg BA-108 amp. What happens is that whenever i stand on concrete or play through distortion, overdrive etc, there is a buzzing noise (I should probably point out that the buzzing occurs with distortion WITHOUT being on concrete). It is weird but I haven't yet gotten in touch with Ampeg or the Rockshop (where I bought it from). If anyone could help with this PLEASE REPLY! It is a very strange problem that i have never heard of.