Yes, stock driver. It was one channel FET. It drew 10A, but output seemed a bit low.
The TA based driver is only in the S43 and is a 2 channel FET + 1 design.
Hopefully TA will answer back about it’s amp draw. He told me previously that the output is still around low 2000’s range. It can definitely be improved with spring bypasses.
Besides the Mateminco version being available in copper, it looks like it also gets a different 18650 battery tube with the finger grooves in it.
Lexels S42 review.