Using the Shubb G7 as Richard suggests on the 3rd, 4th & 5th strings at the 2nd fret, does indeed give you DADGAD one tone up (EBEABE) but it allows you to do things that DADGAD doesn't. For one thing you can get notes behind the capo on the 1st and 2nd strings and, if you've got a very flexible thumb, on the 6th string - these allow you to get some interesting chord voicings.

The best thing, however, is that you can use 'normal tuning' barre chords above the capo. This means that you've got access to the 'Is it major or is it minor?' delights of DADGAD when you want to use it, but also the whole library of normal barre chords when you don't. I often mix the two.

You can also use the Shubb the other way round on the 2nd, 3rd & 4th strings at the second fret giving you an 'A' tuning - again, normal barre chords above the capo still apply.

I've spent endless happy hours experimenting with these two tunings (without ever retuning the guitar),they open up whole new worlds.

Tony B