Marshall Astoria Custom Head by bace
This amp is based on the same setup as a jtm45. Two KT66, GZ34 and ECC83 preamp tubes. But they added things from other line two. It has more gain (and master volume) It has a tube driven effect loop. So it is definitely NOT a JTM45. The output stage is also changed. It is cathode bias, so no need to rebias and you can switch tubes to EL34 or 5581 without a amp tech. This one also has nice feature, it does not have negative feedback from the output stage. This increases the distortion (nice for guitars) but it is harder to get it stable. Some other features are edge control that is some kind of tone control between phase-shifter and output stage. There is also a "body" extender that boost the lowmid/bass and a boost and a treble-boost. So it can get tones from clean to very warm distorted and a bit higher gain mashall in JCM flavour.
High quality build with point-to-point and top components. Looks different.
Cons. It does not look like a mashall too me. Price is matching the quality, with a quality price tag too. Marshall website, can't find manuals and technical documents. This disqualify it as roadworthy thus Marshall claims that was part of their design goals. Marshall has become a toy brand, I hope this amp is not that last good amp they ever did.