XlR Splitters in studio

I have recently bought a Focusrtie 2i2 audio interface and am getting on well with it for home use, however it only had two inputs which is fine for just recording guitar or vocals but for drums I need more inputs.

I was wondering do xlr splitters http://3.bp.blogspot.com/_-v4BDzg7X50/TT8hukOT3lI/AAAAAAAAABU/kNu6CAj09YA/s400/_K5N9832.jpg take away quality?

Sorry if this question has been asked before, I could only find it in relation to stage use.
Thanks

We use stuff like this all over the place at my news station, but that's spoken word, not HQ audio

Do you notice and subtle difference in the quality?

You could always use a small, inexpensive mixing board (behringer, mackie, etc) and feed that into your interface. When you parallel mice, guitars, etc you are changing the impedance and that can affect your sound.

Do you notice and subtle difference in the quality?

I do not, but remember these are wireless mics with basically inexperienced audio mixing people going to a live broadcast. Honestly, we only really look at problems when level is markedly down or "scratchy."

For a home recording, I think you would be OK

Splitter cables will always have one signal slightly hotter. I "Y" cable toms from time to time to save a channel in live situationa.
Recording live drums you should take the time to use a small sub mixer. A mini mixer with 6 to 8 channels will do. Make sure it has insert points for compressers/ gates. A simple setup could be kick,snare,Tom1 ,Tom2, Tom3,hat, overhead. It will be a mono mix going down to one channel of your recorder. The other for rhythm guitar. That can be the start of your basic backing tracks. Take the time to get your drums sounding good because that's the only overall level you get. When you go to mix the whole song a snare too loud and a tom too soft can not be fixed.

If you would like a bit of reverb on the kit add it on through an effects send and return it to a channel on the sub mixer,to fade in out and eq the reverb. Reverbing the whole kit later will cause a muddy reverbed kick drum.

I should have told why a splitter cable has one side louder. A slight Impedance mismatch. Also slight phasing at close proximity. I always reverse the phase on my snare Mic in relationship to the toms.