Marshall Haze 40 - Impressive JMP Tone (even using the onboard speaker!!

I'm playing a 2009-2013 Marshall Haze 40 1x12 all tube combo using a 1973 Gibson Les Paul Custom. It does the JMP and Plexi tone beautifully and the onboard Celestion G12T-66 Marquee speaker really impressed me. These are a super great bang for the buck. Some quality issues were reported back then. It would be interesting to see if there are feasible fixes for those. If so this amp is a KILLER bang for the buck.