my band are looking at getting proper amp and cab stacks going. my guitarist has his heart set on a marshal mode four head, which is a solid state 350watts. i was looking at a bass amp that was 300 watts, which was valve preamp, and SS amp. i'm thinknng it might not be enough. because i'v heard that you need a much more powerful bass amp then the guitar amp. so what kinda wattage should i be looking at to compete with 350 watts guitar amp? i just need a rough idea thanks!