For some perspective on his response to the LM Drum, read what Roger said about the $4500 Luma-1.
The Luma-1 is a much closer copy, using original code on the original CPU ( the Z-80 ) which Behringer couldn’t do and afford to sell it for less than a tenth the price, and to shrink the layout as much as they did. The Luma-1 is the original size.
Interesting to consider both of Roger Linn’s comments taken together.
To further discuss the Luma-1 you are welcome to post in that thread.