I wasn't impressed with this plugin. Sounds OK, but doesn't really have anything over any of the EQ's I already own. The presets are not useful. Lots of cute names, but no real clue as to what the EQ's are emulating. I paid $200 for this plugin, because the demo would not work. Don't waste your money like I did, take this plugin through it's paces to make sure you can find a use for it that is worth the $200 - I still haven't found a good use for it after trying it on several occassions. I frequently find that I already had a suitable UA EQ plug that sounds better. I love the UA products, and all of their plugins, but the Helios is definitely the exception.
This one is really not usefull, you really got to tweak the knobs for sth to happen, it didn't sound accurate and just right to me.
It just doesn't even stand the comparison with the pultec which is now way behind the neve's Eq's.
Don't waste your money on this one, even the CS-1's Eq sounds better.