I am currently pretty happy with the results I am getting when recording my jazz guitar. I currently mic my Archtop (seven string, big body type) with a Rode NTK and record the direct signal from my guitar through an Avalon U5. I then re-amp with a radial X-amp through a Polytone and mic this up. My interface is a Firepod going into Logic. I am recording in a quite small room although it has been treated with an Auralex kit and I also use a reflection filter. The mixture of all this seems to work for me. Although I am happy with my sound, would a Groove Tubes brick or similar preamp be a good investment? It would be used with my Rode NTK when micing the guitar and then again when micing my amp. I have been researching this idea and some views seem to say that it will improve the sound, other views are that with my Firepod, I won't hear much difference. I was wondering what the general opinion was if this would be a good idea.