If you (OP) cannot wait for the 034 to arrive, I would second the above and recommend the Mooer Pre-amp 012 for Slash's tones (I have it and can conjure up fairly decent Slash sounds out of it). The 034 is far superior though.If you need a Marshall in a box right now, presumably for practise or gigs, get one of the Mooer preamps. They’re relatively cheap especially used.
I have to agree, the Jackhammer sounded fine in those clips. Its been a long time since I owned one and when I did I don't remember it sounding at all like that. User error most likely.To each its own, and I respect everyone's opinion, but the Jackhammer doesn't sound like a piece of garbage here:
Or here, for that matter... (Slash tone):
I repeat, used in Overdrive mode (Distortion mode is unusable) is capable of fairly decent tones - and for what it costs, it is not a complete rubbish of a pedal imo (and yes, I have one and still use it every now and then, despite I have more "high end" pedals like the Carpe Diem, La Grange, Menatone the King, Tech21, Skreddy HFD, Zvex BoR, Pedal Pal 034 - just to mention a few...).