[adam79]

The 610A is the original while B is the modern design. Speaking of their plugins, the big promo they were offering that was supposed to end on Dec 31 is now listed as ending March 2015! What a bunch of schemers! When I was checking out all the plugins I noticed that they have a Summit Compressor, but not the Channel Strip. When I was trying out Softube plugins they have the Summit Grand Channel which is the Strip and Compressor in one (you can also buy them separately). The channel strip was amazing. All their plugs are 60% off for the next couple weeks (unless they are using UA tactics). For only $110 my next plugin purchase might not even be UA! Although modding my pair of MCA SP1's will prob be my next project. Too bad Jim Williams stop doing his mod. Anyone try the DIY microphone parts mod that is supposed to mimic what Jim was doing? The Michael Joly SP1 mod seems awesome, but it's almost double the price.