i do see a huge difference. i'm on a 2009 macbook pro, logic express 9, and i use an apogee one. granted, my goal was to have a super streamline and portable rig. prior to getting mine, i thought my sound output was fine, really. once i plugged it in i instantly knew i was wrong. i would still consider myself too new to this to say it has improved my mixdowns, but i absolutely hear better sound out, plain as day
I think if you have a virus ti in the post you better get your arse in gear and read the specs. You just bought an external soundcard... the virus ti....
From the manufacturers website:
"Virus Control VST/AU/RTAS compatible virtual instrument plug-in included to create an audio link in between the host sequencer and Virus hardware synthesizer." - all through a usb2 connection.
"Audio and MIDI inputs and outputs can be used by the sequencer application as an audio and MIDI interface. Total Integration keeps working, even if you prefer to use another audio interface."
"6 balanced outputs with +4 dB level and soft limiting algorithm. Studio grade 192 khz D/A converters with S/PDIF digital I/O. 2x24 bit inputs. Surround sound capabilities. The Virus TI Snow has 2 un-balanced outputs and no SPDIF I/O." - Your mac isn't going to match that.