Thanks for this notice!!
I just got a Demo MR-1 and pulled a nice SB of YMSB last night. However, the battery life was an issue. I went to RS this morning to see if I could put something together temp. for tonights show. Here is what I found... Parts total $5.00. Time to assemble about 30 minutes.
I'm still going to get the Korg unit but if you don't want to wait 6 - 8 weeks might want to check this out.