Shadow 7, you are totally missing the point here.
Everyone is basically steering you in the same direction which is AWAY from your crappy computer mics. Virtually none of the well-intentioned preamp suggestions given here even HAVE 1/8" jacks and I bet some the posters would be shocked to realize that you are insisting that the proposed preamp work with these POS mics.
You are so desperate to hang on to your 'investment'
in these mics that you reject all these reasonable proposals for inexpensive preamps because they don't work with your existing shitty mics. You have even gone so far as to purchase a Mobil Pre which has a USB converter included even though your Delta is
already a converter and all you really needed was a straight-up preamp.
You are wasting money duplicating your efforts. Why? Because the Mobil Pre has a 1/8" jack?
You have come to this site asking for advice, and believe me, these are the people whose advice you should be taking, but you are too stubborn to take that advice. If you want advice on consumer crap, go to a consumer crap web forum. And if you already know what you are going to do, why bother to post?
People have taken time out of their busy day to kindly advise you on what would be the best course for you and you are disrespecting their efforts by
arguing for your crap mics. On the off chance that you are not a
troll, and that you really do want to know what to do, here it is one last time:
The microphone is the one element in the chain that REALLY MATTERS. You now have the Mobil Pre, it is a preamp
and a converter, you can sell the Delta and get a REAL MIC.
Stop bullshitting us about how poor you are- (how you had to use headphones for a mic) you can obviously spend your money on $200 worth of CRAP and then throw MORE MONEY after it trying to buy overpriced adapters and interfaces to make your crap work with REAL equipment. You say you have a $200 'investment' in these mics and later you say it's a $20 mic. What, do you have TEN of them?
Add up all the money you are spending on duplicate gear and 'adapters' and you would have enough for a real mic.
Stop bullshitting us on how you don't "need" a high-end mic.
Nobody is suggesting you get a
high end mic. Just a REAL mic.
And are you really worried that someone is going to steal your "expensive" XLR mic but somehow not take your computer?
Get rid of the lower than low-end mics. NOW. Make that the
first step in your upgrade.
If there is one Gearslut reading this thread who thinks Shadow 7 should continue to buy adapters and stuff with the goal of making his 1/8" computer mics the centerpiece of this recording setup, let him post now.