The Black Line gear was at Namm - Hadrien Ferraud was jamming on the combo and it sounded fine (but you can't hear much at that place). The Black Line LM 250 head is identical to an Italian LM 250 , but from Indonesia - same EQ, filters, balanced and unbalanced inputs, line out, speakon and 1/4 inch outs, fx send and return, the tuner out - there's no difference. I wouldn't call this a beginner's amp unless 250w is the benchmark for a beginner these days...
The combo uses the same 250w head, and it has a 200w 15" speaker.
There are two 8ohm cabs - a 200w with 15" speaker and a 500w with 4x10s. Both have 1" compression drivers for the top end. As far as I know, the speakers aren't neo.
MB's Facebook page says they're at the London Bass show at the mo - so you can check them out there f you're in the area...