I dont mean to be naive here....I'm sure the answer is yes

Could I just use the KMA from another keyboard through midi for it's arranging capabilities ????

I'm sure I couldn't hang with the small keys....BUT, for $499 I could add arranger capabilities to my KORG Triton Extreme that's coming next week....

Is there a cheaper way to do this.....I looked at the Roland BK-7 which I guess is discontinued....but it seems it was $999

Is this my best option at this price point? Shoot the drum machine i was leaning toward, the BOSS DR 880 is $489.....