hi I tried this marshall amp at the shop and it's very nice but it's an all valve 400w amp.... I'd like to buy it but I am worried about playing small gigs... surely it will be ok playing outdoor venues but what about playing in small clubs?? for small clubs I mean smaller than 1000 sq feet........!! what if I couldn't raise the volume enough to make it play good?? will the soundguys always tell me "less volume,please!" ??I need something reliable... but this amp really sounds cool... it's a vba400 head with 4 x 12' so... should I buy it or it's better buying a hybrid head with a mosfet power amp??