You've probably seen this, but from the analogue heaven site:
[quote]i've owned the om27, om84, and currently have the om200m with midi. the
27 was great for it's warmer analogue-type sound and the ability to
press and latch 2 or more rhythms together and get a blend. the buttons
seemed to have a quicker response than later models as well. the 84 i
didn't care for. it felt sluggish compared to the 27. i'll probably
never sell the 200m because of the midi out. it sends on 3 channels,
bassline, chords, and strumplate. there are some limitations. no midi
channel for the percussion section, so as a controller, you're stuck
with the onboard sounds and rhythms(the sounds i happen to like, the
rhythms get old fast but processing helps). you can also assign your
drum machine to the bass channel to layer it with the omni sounds.
biggest drawback is it sends no midi clock, only note on/off. i find the
omni great for wacked out versions of your favorite tunes. the other
night i came up with a rendition of "brain damage" that i just couldn't
stop playing. good songwriting tool. reggae works well with it.
attention getter in performance as long as you don't play it all night.
the strumplate and a good tube driver will provide a thick rippin' power
chord like you've never heard. i don't really know which are digital and
which are analogue. the om200 sounds are all pretty warm. the
qchord(omni successor) is for sure digital. i'll likely get one of these
at some point because they send on more channels, but they too have
limitations. although the q has midi in and out, you can't use them both
simultaneously. not sure if it sends midi clock. i checked out the
reviews on harmony central, but couldn't really tell from what was there.
if you join the qchord yahoogroup, the moderator is a helpful swell
fella. i think he knows the omnis too.
here's a circuitbent omni:
[url="http://www.klangbureau.de/Omnicon_E.html"]http://www.klangbureau.de/Omnicon_E.html[/url]
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