iPad directly into Amp - okay idea? or bad idea?

Are you using a mini headphone stereo plug that splits into RCA’S right and left channel? 

If if you are proposing going straight to the auxiliary or tuner RCA input from the iPad, I would say that this is a bad idea. I mean, the sound quality from this as your source is going to be poor. That is if you are relying on the tiny DAC inside your iPad. 

Maybe I misunderstood how you intend to take digital files on your iPad and play them on your MC-2205, are you using a DAC?

I listen through my Bryston DAC to digital files from my old iPhone 4 through a Wadia 171i digital dock that outputs it’s (really clean) digital signal via a digital coaxial cable into the Bryston DAC. The DAC has XLR left and right channel outputs to my Bryston BP-26 preamp. The sound quality is better than my Sony XA-5400ES CD player in some respects - lots of detail and texture and layering is preserved and replicated even on slightly lower res recordings. 

You cannot expect quality digital sound sound from an iPad outputting stereo analog out where you rely on the tiny iPad DAC. The sound quality will be harsh, tinny, inaccurate, etc...

I’m surprised no one asked about your DAC yet. Maybe there is a digital dock that accepts he iPad’s Lightening connector (instead of the headphone out) in a bit perfect way that can be imported into the DAC of your choice.

Unfortunately the Wadia masi61 mentioned isn't made anymore, I use one between my IPOD Classic and my Aqua LaVoce S3 Dac. You might want to check out one of the DACs from High Resolution Technologies , link below, to see if it will meet your needs. I have one of their IStreamer Dacs that I use in my headphone system if I want to use the IPOD Classic in that system. It will definitely sound better than trying to go from your IPAD directly

http://www.highresolutiontechnologies.com/

I'm using a Zorloo DAC for my iPhone but if you have the Apple camera adapter you can use something like a Dragonfly.

Try using an Apple Camera Adapter to get digital out of the iPad, then go into a DAC. For me the Schmitt Modi 3 ($99) does the trick, do not let its low cost or the money grabbers fool ya.  If you want a fun project, build a Raspberry Pi streamer/DAC combo using a HIfiBerry DAC+ Pro ($40), sounds nice.

Yeah you need a DAC right quick.  I use an Apple Lightening to USB 3 camera adapter (the one that allows you to charge your device while playing) from my iPad and iPhone into an Audioquest Dragonfly Red for my headphone rig and it took the sound out of my Apple devices to a much higher level.  Obviously lots of great USB DACs out there, but this is a relatively cheap and effective solution until funds allow you to move up the DAC scale.