I wasn't sure of what version software they were up to since I last owned a SD1. it could very well be 4.0.

I checked the Ketron.it site and the last version was 4.0c.

so with the 4.0 it's virtually equal except
the buttons are not color-coded. I can live with that, or color-code some myself.
now waiting for the guy to come down to $1000, or if he doesn't by Sunday, maybe i'll go there and try it and if i love it i'll give him the $1250.

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Miami Mo

Hey!
I remember I had v4.0c on my SD1 Plus, and the same OS is working on SD1 classic.The nice point is that you may use the sampler for different tasks.I even use it for backup voices...!Or live guitar riffs..it sounds great!
I loved SD1+ the only reason I don't have it anymore is the weight, almost 35 kilos with flight case..so I turn to Midjay.
Vio

keysvocalssax

If you take an SD1 and load OS4.0c (with the new sounds option which will require about 14 disks to complete), then you'll pretty much have the SD1Plus. Also, you'll have to download the new bonus styles associated with the [plus]. The older styles have also been revoiced to take advantage of the new sounds too.

I say pretty much because the Plus has extra memory dedicated to the new Stereo Grand Piano sound which can still be played in a regular SD1 but missing a little resonance detail - but that is it.

Thanks,

AJ

I had both SD1 and SD1 plus. the older SD1 has a problem with the connection between the display and the board which results in crushes. it is fixable but can cause a big headache. other than that it is a wonderful keyboard and imho much better than the E60.