There's been some discussion on AH on the sonic differences between the Roland JX8P, JX10 and MKS70. The JX10 is claimed to be the equivalent of two JX8Ps and the MKS70 is the rack. Tomislav Babic of
babic.com sent the following in.
"iirc its the 5534's on JX8P output stages that changed into somthing cleaner on later models.. MKS70 is ever so slightly brighter, cleaner than JX8P which in turn comes across as slightly warmer. however, MKS70 is substantially less noisy. (afaik even latest JX8P had this change) i prefer the latter. the difference is not night n day, and i like the addedpresence/lack of noise. and for the going price of 300 or so, getting two 6voice analog engines in 2U space is a steal. here's how MKS70 sounds in double mode (4 DCOs, 2 chorus), times two tracks dubbed:
http://www.babic.com/SYN/MKS70-DblPad-Spectrum.mp3here's another one, its a demo of hi strings, violas and cellos on MKS70,
all layer (dbl tone = 4dco) patches:
http://www.babic.com/SYN/MKS70-Exodus.mp3 unique character. my jup8 has got nothing on this board. and vice versa."