you won't get any tape without the digi-mod. it's a necessity. without it you can't use your UA5 as a stand alone unit.
Maybe your confusion is that there are several mods that people get to the UA-5. First, in order to make the UA-5 work without having it plugged into a computer via USB, it must have the digimod, which is what you are discussing above. There are some resources about how to do this yourself somewhere in taperssection.com...
Second, people sometimes get an Oade Brothers warm mod, or a presence mod - this switches out the stock mic preamps, and supposedly makes them sound WAY better. But, these Oade Brothers mods are optional.
Check this out:
http://www.oade.com/digital_recorders/Digital_Converters/Edirol_UA5.htmlThe bottom will describe the optional mods better than I can...
I have the preamp --> recorder rig you are contemplating, using a UA-5 w/ a Oade Warm mod, and it sounds very nice. I have never heard anything else, but my recordings that I have done thus far sound really nice! Strangely, it is called a warm mod, because that is exactly how it sounds - warm! For the warm mod UA-5, w/ 'portable' mod, I paid $500 new, and I have spend about $60 or so in batteries, and $20 or so for the cord to connect the UA-5 to batteries.
HTH-
Pfife