mine was bought before the whole chinese ampeg deal went down. back in 1998. so it's actually a heritage but not labeled as a heritage. lol
it's had to be worked on a few times through the years. i remember playing a gig and i plugged it in for soundcheck and a puff of smoke came out of it. needless to say i had to play through a DI box that night with no amp.
i think i'd trade it in a heartbeat for a GK fusion 550 and a GK neo 4x12 cab though. i've never even heard one but i played my little mb115 combo and it sounds awesome. the fusion 550 can only sound better especially with the bigger cab.
either setup is pretty awesome. i had a mesa boogie bass 400+ with a 2x15 mesa cab before too. i liked the ampeg svt and 8x10 better.