Damn man, sorry. Blue makes some pretty solid stuff, idk what's up. I stick to plain old mixers and preamps into my line-in. There's several xlr-usb mini preamps out there, dunno much about them, think there was one called Mic Mate or something that a friend used and liked.
I recently picked up an Art Tube MP v3, after going from a ProTools mbox rig, and a multitrack studio...I dont really need to record multiple sources anymore.
I dunno how much the one 12ax7 that is barely being worked actually affects the sound, but it works well enough. I'm using it with a 1/4 to RCA cable into the Titanium HD's line-in and overall sound quality is similar to my much more expensive equipment, though I record in an untreated room with sub-$200 mics, lol.