Oh, don't get me wrong, the Tetra seems awesome.  You're right too, it's a good price for essentially 4 mophos, and the possibilities for expanding voices on other synths make it a great addition.  If I had the money, I'd buy both and have 8 voices

Well if you have money yes, go for the Mopho X4, but I really do like the Tetra and I think it's a great bang for your buck. Also, it's analog, i can't really stand digital stuff anymore.

I'd love a Dave Smith, but I don't think the Tetra would be my choice.  I'd rather pay the extra and go for the Mopho x4. 
$600 for being a 6 voice synth is great, in my opinion.  Especially with the sounds this thing is capable of.  The Tetra is more and it's only 4 voices.  It's still really great though.  It's fucking Dave Smith.

gosh damn this is tight

also on the mutable forum they raised the point  the the tetra has some build quality issues.

$600 would be a pretty good deal since it's essentially 6 Shruthi's all linked together with even more extra cool stuff packed in.

this is exciting news!  i love their design approach

i'm pretty sure i saw a price of $600 at some point. let me try to look it up.

Yeah, would like to see how much it costs. I feel like going for a Dave Smith Tetra is a much better buy in my book.

also this:
http://www.youtube.com/watch?v=qCSCYlEYDvY

Really interested in what they're going to price the kit at. Might have to make a tough choice for one of these babies down the line!

Mutable gear is AWESOME.

http://mutable-instruments.net/ambika

I am EXCITE.
though I wish I had a bigger mixer to plug all those channels into.