Does anyone have any info on an AMP BC-250 (Amplified Music Products) 250 watts dual channel bass amp? I've found references to a BH-420 (?) and wonder how it compares. I bought it, I guess in 1989, direct from the distributor here in the UK, as a back-up on a very long tour and never used it (I love GK!). Any info about the amp or the company gratefully received - I know nothing about it. Thanks,James.