Think I got my answer from another user archive. So I believe I need to get rid of my TubeMP & PODGX and get a Mic preamp/Instrument combo audio interface...!
If I still want to use the POD GX, I'll need to adjust the output of the tube preamp to approx -20dB and than boost it in the DAW which, unless i'm wrong, I'm not sure it's the right way to do it... sound quality speaking.
http://fr.line6.com/supportarchivenew/thread/62080/
Re: RE: POD Studio + pre-amp by darealagentp on 2011-04-27 10:55:02
Hmm... there could be a possibility of your amp's emulated line level signal overloading the input circuit of the GX. GX's only provide you with 1 input option: the instrument level input that's looking for a guitar's pickup signal-level input source.
With the next model up (UX1), that device offers the option for 2 "Line Inputs" in addition to the Instrument input and an XLR mic input, too.
I think you might have clipping issues trying to feed the Instrument input of a GX with a line-level signal from an amp.
Also:
Re: RE: POD Studio + pre-amp by darealagentp on 2011-04-27 11:52:55
That's what I had previously mentioned. Sorry if this wasn't clear before.
The POD Studio GX's only input is designed to receive "instrument-level" input signal.
If you send a line-level signal, there's a good chance that this will overload the 1/4" Instrument Level input jack's components.
The POD GX was designed to see a direct signal from the guitar itself, and not a line-level source. This is one of the reasons why it's the lowest-priced USB interface we offer... the input options are not as great as the other units above it: UX1, UX2, KB37.
Only the next model above the GX (the POD Studio UX1) will have the hardware options for you to run a line-level signal (via the Line 1 and Line 2 input jacks on the back).