If you check the fine print of your manual, you will see what limitations, if any, there are on sampling and bit-rates. These limitations are due to computational resources, or rather the lack of them. IMO, this is a great unspoken truth and the community should trumpet these limitations to anyone who will listen. Only by talking about it and causing lost sales will manufacturers ever address it. The next more capable DSP would only cost, at most, a few dollars more.
Jeff