Herb,
I got a chance to toy with the cursed thing last night. I must say, it was contankerous.
Vista did some weird thing...and I'm almost positive the behavior is attributed to the junky stock sound card. Seems the PC can only route ONE (audio) signal at a time, whether it is Line In or that USB thing. My usual Line In input option went away/dissapeared in my DAW audio input options...strange.
I really, really need a dedicated device, at least a 4 ch input. I've been "limping" along with the stock sound card for years and I'm growing a bit tired of its limitations truthfully.
Anywhoser---the guitar/usb chord thing was "ok" I guess. It exhibited some strange artifacts---like a very low level "beep-----beep----beep".
The latency was "manageable"; ASIO Direct Mode made things a little better; however, I was working it in a mix that was pretty audio laiden...and bumping up the buffer to like 11ms still resulted in hiccups (anyway, I could "freeze" my tracks and solve that).
Signal levels were kind of all over the place too: At first the dry signal would clip, so I went around tweaking the Input level of the vst---then (in experimentation) got to tweaking the USB's "Mic" parameters in Window's Record Playback Devices...because at low/lower levels it seemed the vst wasn't getting enough to sound, what I perceived to be, good or better than it did....errrrr.
This final attempt resulted in a waveform that was highly compressed (somehow)...wow...hardly any dynamics...*sigh*...I digress...then my brain died and I went to bed.
The Amplitube is a semi-lite version, and I'm sure it can perform better with the right interface.
For now though, it is discouraging enough to put away and stick with a direct processed signal from my Line6 POD (just like yours)...though I do enjoy the benefits of tweaking the dry signal with the vst aftwards to dial in a sound vs. re-recording the whole thing...THAT is cool indeed...old hat to some, but new to me.