This is as accurate of a comparison as I could do between some of the different Focusrite preamps including the ISA 428 which is their "high end" pre so I will let you guys decide if the sound difference is really worth the cost difference. All of these recordings were done into Pro Tools at 24bit/96K and are completely raw with no processing of any kind. I may do some more comparisons in the future so comment, like, and subscribe. Thanks and don't forget to watch in HD!